Good recs for physical therapy type content on the internet?

For the past couple of years I've been extremely sedentary and I am definitely noticing how that's taking a toll on my body. I think I had imbalances and such before but now they are glaringly obvious; one shoulder higher than the other, one hip/glute is tighter than the other, same with calves, etc etc it goes on and on. I wanna try to address this stuff, so if anyone has any pointers or resources that they find helpful for mobility/strength/flexibility that would be dope.