Welcome,
Has there been any Xrays or other imaging, or advanced PT evaluation, or possibly a chiropractor evaluation?

tightness
sciatic pain (it can shoot electrical spasms from buttock down leg )
bad fall onto my back
These make me think some soft tissue & alignment/body work might be something to look into..

Meds won't fix the issue.. They might be needed at times, if it is not easily fixable...
Body work, PT /DC may be a better option for a possible fix..

https://www.neurotalk.org/members/10...cture5102.html

You can explore You tube videos on sciatic pain, bodywork and such.