Sounds like me haha.
How old are you? I turn 34 this year, and the last 12 months my body's ability to recover has slowed way down. I've had to adjust a lot of variables to continue attempting to progress, which meant progress has gone backwards.
You likely need to look directly at your training plan (not day to day or week to week, but month to month). You need to make sure you're getting adequate sleep and recovery. You may need more rest days per week, or at least active recovery days.
Adapt to the new you. If you've been training seriously for 8 years, I'm going to guess your around 30, or older. You need to be smarter in your approach.
Must haves in my opinion ( I use as my warmup):
-Rollovers into v sits / bent iron cross: wake up total body / spine.
-Side planks / planks / glute bridge: wake up hips and posterior.
-Couch stretch: hips, quads. My go to lower stretch. Lots of hacks with it too, to take it to next level.
-Then add daily specific stuff, jumps, throws, hip circle work.
-Do a lot of rear Delt work, rows, pull-ups.
This is the prehab I live by.