Hey there. I'm always happy to give feedback to new artists becuase I know how much it helped me when I was starting out
Listening now,
Stamina:
The actual bass sound is OK, but there are alot of clashing notes and it doesn't sound musically right. I think theres a bit too much bitcrusher going on to be honest. Kick and snare sounds alright, although I would suggest taking some of the low end thump out of the kick to avoid muddying up the mix.
Also, if it had more percussion it would really help to give the track energy and drive it along instead of kind of plodding along.
Obduxta:
This is basically the same track but with better musical ideas. Bass sound at 3:30 is very good, like it alot. Got better atmosphere than the last one but it still doesn't quite flow that well (this is down to lack of percussion again).
In general I would concentate on improving your musical theory and how notes interact with each other to create different moods and stuff. You seem to have created some good sounds so if you can get them into a nice arrangement or tune then you will definately be on your way. I'd also work on adding percussion loops to create drive in your tracks, and also the samples you've used could be improved but that comes with experience.
Keep at it, not a bad start at all!