Lower back pain since two months-age 23.

I have been waking up with lower back ache every morning since two months I have tried everything I could find on the Internet used heating pad and ice packs. Exercises like Mckenzie ,cobra poses tried cat cow poses,and strength training for core like side planks , dead bugs and bird dogs but it hasn't gotten fine. It started two months back when I was travelling i didn't have any pain during the travel but it started some time later like a day or two I thought it was a pulled muscle . I also have a past injury in my knee acl and bucket handle meniscal tear for which I got surgery ( 2 years ago) in 2024. Why is my lower back pain not resolving its affecting my life so much is it a disc bulge I can't deal with two injuries ,it's too much to deal with please help me