Can't chew or bite on hard crunchy foods

I can't chew solid, hard, crunchy, crispy foods on both sides of my mouth. I am eating only soft foods. am currently dealing with jaw pain on the right side under ear lobe and neck right side for 14 months now. Also tooth sensitivity for biting pressure and tapping on lower first right molar #46.Had root canal for the same reason and no relief yet. Suspected root fracture on it and cbct scan didn't show up anything. No changes after root canal. Not eating or chewing on this tooth or this side. Using only the opposite side(left side). Eating only soft foods on left. have a history on lower left first molar #36. I had a very shallow cavity filling on 19 in 2018 along with the upper molars.lower first molar36 was painful on and off. Had to adjust the high spots multiple times after the filling. Had to refill it in 2019 for this pain. It was a shallow cavity. So he did more fillings 2nd time. After the fillings,I couldn't chew on hard,solid, crunchy foods. can't chew on right side too.