I just don't get it. I can't feel any exercises properly

Thats pretty normal to be honest.
As long as you are pulling towards your center, you are working your back.

Its just that generally your arms start to feel the fatigue first so that is where you "feel" the exercises. Your back is still doing work.

>>42176339
i dont normally like bands, but i find i really feel band pull aparts in the center of my back (even with just a heavy band)

>>42176339
I'll give you two exercises, op. They should be the first exercise done on each day for back
1) chinups. Slow, from a dead hang, slow, until chest touches bar, slow.
2) snatch grip deadlifts. Controlled, bar in contact with shins and thighs through entire ROM.
If you feel either in your arms, your grip is too weak. Do some sets until grip failure to ensure you're training grip and then use straps.

>>42176339
This is where chest assisted t-bar rows shine. Start by using a fraction of your bodyweight.
You lift the weight from the bottom to the point where the bar clangs against the chest bench. You keep your chest all the way against the bench. There is no way you can cheat and fail to use your back muscles.

>>42176339
You good, just squeeze them scaps. Pretty normal. Worst case put more weight on. Varied hand position can help, just switch it up till something works