Lots of good advice from good guys in this thread so i honestly dont need to say much lol
But like other have mentioned, before adding more volume and frequency i would REALLLLY fine tune the exercises you like and stick to them. I spent years rotating and not sticking to exercises and just randomly throwing in movements that "didnt feel right." I also tried to stick to exercises that OTHERS liked....i never got shit from T-bar rows....loading up 7 45's never made me FEEL my back. Screw it, its gone now. I also spent too much time trying to heeeeave and throw weight around. Back, to me....has become a very mind muscle connection BP. FEEL IT...and it will grow.
Also, and this probably doesnt need to be said, get STRONG in those exercises that you end up choosing. I dont want to start a log book convo, but when you do your sets (i usually do 2) of each exercise....write that shit down somewhere. So you hit DB rows with 100x 10, awesome. Next time you hit it, beat that. If you get stronger, you WILL GROW.