Food food and quess what more food, even if you cycle on off you didn't put the food in!!

Stack that food dude. Eat till your about to barf many times a day and you will gain weight.

If you aren't killing yourself in your workouts and haven't optimized the three C's of natty lifting - caffeine, creatine, and calories - hold off on the stack. I've been in gyms for ages and have never seen a lanky dude like yourself that actually ate or pushed hard in the gym.

If you're 6' and around 160, you definitely don't need any gear to put on some serious bulk.... you need calories. In my opinion, and what I've seen in my friends, gear is for pushing past a BMI of 25 or so.
I also work construction. I'm 30, 5'11" and spent my whole life in the 160-170 range. I was the cardio/halfass lifter type for about 12 years. I got sedentary with covid and recomped in a bad way, weight stayed same but bodyfat went from 12% to 19%. After a breakup, decided to get back after it and put on 22lbs in 6 months, completely off cycle. Everyone's just saying eat more but I'll give you the specifics of what it took me.
I found a complete whey protein that didn't make me gag and put down 150g every day - that's 6 scoops. Twice a day after eating to full, I threw 3 scoops in 16oz water, chugged it like a drinking contest. That's 600 calories.
Some people shit on carbs but they're important. I also ate 1000 calories of junk carbs every day, whether that's an entire bag of gummy worms, 30 oreos, home baked cookies, whatever. Something desirable enough I could eat when I was full.
I peaked at 22% bodyfat, at which point I went down to 500 calories of junk carbs.
My meals always had a ton of red meat and cheese. I believe that everything is slightly more effective in its natural state, so rather than creatine powder I also set a minimum of 6g creatine/day from food. On most days, this was 1lb ground beef with 1.5 cups of shredded colby jack cheese. Plenty of other places to get it but that meal is my absolute favorite. Split this between lunch and dinner, this part alone is about 2200-2400 calories.
Green smoothies - micros are also important and I'm a child so I prefer my veggies in smoothies/juices with lots of fruit sugars. I'd drink 48oz. of smoothie/day, depending on the smoothie or juice that's 600-1200 calories.
Lastly I'll fill in with nutty breads, bagels, etc. About 500calories from 2 bagels or 4 slices of bread. I really like nutty bread so I can eat it as is. This helped my stomach feeling calm. I'm lucky to be very very tolerant of gluten though. I know some can't do this. Also kept tums on hand, some days the pound of beef and cheese gave me reflux.

So, eating enough to bulk looked like:
600 calories from 150g protein powder
2400 calories from beef and cheese (natural creatine!)
1000 calories candy (remember, carbs nourish and sustain your muscles. Protein is only needed to repair and build them.)
~1000 calories juice
500 calories bread
Totals about 5,500 calories/day. *edit note: my cardio days are on the order of running a half marathon or something similar. If you're not throwing down 1600 calories in a cardio session 5,500/day is probably too much. Even still, if you can't put on weight I'd suggest eating until you've found how much it takes to start putting on fat as well, and work back from there.

And lifting hard enough looked like:
Lift mornings, 6 days a week. Always 100mg caffeine and 3g beta alanine 30mins before. This makes it easy to be fast and focused. Beta alanine makes your face/body tingle and the only way to make it go away is to push yourself hard.
Lift for 45mins/session. Never rest more than 20 seconds between sets, no time in my schedule.
3 days/week after work, run or some kind of cardio recreation.
other 2 days/week, secondary 45min lifting session.
Sundays, sit down and game like a motherfucker

I'm planning to do 3 1-month cycles of Tbol and test for the next 6 months to recomp down to 10%BF at my current weight. I didn't think I needed any gear to do my first serious bulk, and now having done it I'm certain I didn't. I actually made these numbers just over 4 months in though, and I've been stagnant for 2 months. My lifts are still getting stronger, but my body comp is staying the same, which is why I feel ready to start some gear.

All that said, your body is yours and mine is mine. Maybe I just found the routine that made me start seeing results and yours is different.

Also my ability to eat increases as i force it, for example it might be hard to hit 3500 calories today but by next week ill be starving if i don't have 3500. If you were building a house you could have the best crew and tools(steroids) in the world but without any wood or concrete(food) your not going to build anything

our builds are probably similar im 6 feet and was about 150 (after being sick i was down to 130) now im 198. i always struggled to gain weight but no matter what you take you will not grow without food. all it will do is make it so you wont loss gains when you skip a meal. but you can make the exact gains from eating that you make from eating and taking steriods. some people might say otherwise but i honestly believe for skinny guys like us foods are just as good if not better then steriods. until you hit like 180 at least the steriods arnt going to help you much and then when you do get up to 200 what are you going to do, because now you've already ran a few cycles and now are spending a fortune and killing your health running huge cycles just to look like a guy who kinda works out. even if you where just to spend 6 months working out hard and eating like an animal, you'd be amazed at your results and then Youd have a good base to then consider a cycle. and you'd prove to yourself that your able to eat enough and work to actually really benefit from that cycle. The amount of food i have to eat is insane especially if i worked an outside labor job. if you think you eat alot and your not growing then your not eating enough

What's you diet like? Food is the best thing for growing. If you aren't growing, I can guarantee you aren't eating enough.

You need to stack some food. 6' 155lbs and been cycling for years. Try eating for a change.