Experience with long term side effects of hamstring injury and recovery?

In early November 2021, I suffered a hamstring strain located about middle of my left hamstring. All of indoor and outdoor I was training, rehabbing, and running meets while attempting to nurse my hamstring back to health. Problem is, training hard and healing don’t go hand-in-hand so until about a little over a month ago I couldn’t give my hamstring a full rest. My performance suffered.

Im still feeling tightness/discomfort even when I walk now. My left leg still moves slower and recovers slower during my stride. I had an MRI done 2.5 months ago which came back CLEAN and have had doctors tell me my hamstring looks/feels fine. I’m still rehabbing but don’t know what else to do. My mobility is not there and pre-season is right around the corner. I’ve been fighting the pain and stiffness for 8 months now. This injury ruined my Junior (college) season and I’m stressing hard that it’ll take my Senior season away from me.

Has anyone else experienced and recovered from lingering hamstring injury side effects?