@childofgodforever YouTube has some legit folks. Lots of garbage too but some good quality info if you can find one. I also do what my coaches suggest. My main coach does jiujitsu so our warmups are CrossFit and jujitsu influenced. Kind of cool. Lots of good mobility stuff.
Before working out I focus a lot on 90-90 hip opening, glutes, hamstrings, quads, thoracic spine, scapular pull-ups, yoga flows, etc..
I tend to do some yoga flows before bed also just to stay mobile.
Eating clean and prioritizing protein is key. Include plenty of veggies and fruit, maybe even some fermented foods simply to keep things moving.
Keep it simple and find what works best for you. We all have different bodies and subtle nuances can make huge positive impacts on our wellbeing.