Firstly congrats on that weight loss. Though it’s done and dusted all that weight loss is quite an achievement these days when some people are all excuses or looking for the quick and easy fix.
As you haven’t given us much info about your specific training (program, exercise selection, progression, numbers, periodisation etc.) I can only really respond to what you’ve brought up and my own assumptions, assuming that you have almost a year’s lifting experience under your belt.
10 months may feel like a long time to be training but in truth this is a game of years or decades for some. Even with the use of soviet sport supplements if you get my drift time still needs to be put in. What I’m saying is don’t expect too much from 10 months of lifting. I highly doubt that most of your 36lb gain have been fat especially considering noob gains. However the fat gain that inevitably comes with muscle gain is probably masking your results.
Too much to cover all here but in principle we’d like to be gaining max muscle while minimizing fat gain. Pretty much your body can only gain muscle so fast. If you eat enough to satisfy this then you are golden. Anymore goes to other functions and unfortunately is stored as fat. All kinds of arbitrary numbers are thrown around on the internet like 1lb/week or 0/5lbs/week but pretty much its down to seeing how you respond. Perhaps 36lbs/10 months is too much too fast for you leading to more fat gains with the muscle then you’d like. In that case simply drop your calories a bit.
Lack of strength gains is a bit more worrying as without it there is less stimulus for muscle growth. I’ll assume that your diet and sleep really is in check i.e. you are recovering, leaving two factors which could be holding you back and keeping you plateaued: Training.
In terms of training there’s much to be discussed. Progressive overload, Exercises Selection, Overreaching/Overtraining and many other principles and considerations for training. Frankly it’ll take time, experience and research to understand and apply these to your own programs so I would highly recommend using a pre-written novice/beginner program and build a solid base. When I first started I wasted a month following pro bodybuilding routines and then wasted some more time writing my own. At that stage I was too inexperienced to really know what I was doing and there was a lot that was sub optimal about what I was doing. Gains came more consistently when I used tried and proven beginner programs and slowly I built up my knowledge and these days can be successful in my own programming.
Kinda relevant to the above I think it’s naive to say that you’ve tried and read “everything”. If you have tried “everything” or even just a few things in the space of 10 months it sounds like you’re jumping between programs, exercises, styles or what not and not putting in the time and consistency with one approach to make gains. Sort of a paralysis by analysis kind of deal (I get it truly).