You might be seeing the effects of your previous injury. You might not be fully recovered yet. Fully recovered means EVERYTHING is back to normal including any muscles that may have atrophied due to the injury.
Finish your rehab/recovery and then worry about getting back to normal training.
Sorry your resources are poor. I have a chiropractor who has a device that can track your movements and show you if there’s an imbalance (squat and see if your weight shifts to one side more than the other). I haven’t done it yet but I definitely need to try it.