Hey man

from this small of a sample I would say you 100% have a mental game issue. Losing 8buyins in a day is bad discipline as it is likely too much of a hit to your bankroll. Since that post you have gone through anger, determination, anger, scared and desperation... In a few posts!
I haven't watched much of the videos but you made a bet with 88 multiway on a J22 and I'm not sure that we ever really get called by worse. Are you thin value betting a bit too much?
You also mentioned calling big bets. Against loose passive players you have to fold everything but the nuts v a big bet as they will unfortunately have it a lot. Even if they do bluff it won't be enough to call down light.
I wouldn't get worked up over coolers or suckouts either. I can understand being frustrated when you aren't making your hand and having go fold in a lot of 3bp, but getting annoyed you lost when you got it all in with 80% or when you have an over pair and villain flops frips is just silly as those plays are making you money in the long run.
I'd suggest having a stop loss and improving your tilt threshold. Gl
