Weakness/lack of proprioception in left side

Has anyone ever experienced a significant strength imbalance and very different proprioception in one side of their body compared to another? I am trying to figure out what path I could go down to figure out what is wrong with me/how to fix it. I will list out some symptoms:

-I almost cant get sore on any muscle on my left side
-Less strength on left side
-Significantly less proprioception on left side (certain muscles on left side are almost impossible to activate and others require me to give a lot of attention to if I want to activate them)
-stiff right side and keep getting little injuries or pains that I think are from overcompensating
-Its on my entire left side from neck to toes
-I do not remember experiencing anything like this in my 20's


I (33yo/Male) have been pretty active for most of my life (HS football, BJJ in late 20's, consistently strength training through most of 20's). Lower back injuries and some upper neck tighteness from football and BJJ. I have bad forward head posture and rounded shoulders from sitting all day in my work over the last few years.

I thought about seeing a PT but my worry is going through a revolving door of providers who just give me corrective exercises and never get to the root issue.