>>464252Try some MyoFascial release 1st, then do some stretching afterwards. And finally do a bit of corrective exercises once its warmed up.
You can find a lot of good stuff on this channel for knee/hip/etc. problems. Just because you havent noticed a hip issue, if your hips are out of alignment, it forces your knee to compensate, and that can go bad first.
https://www.youtube.com/channel/UCq9CkTK0Oq_ZZ5U9cbFZVagAt the very least, myofascial release will alleviate pain, but if done correctly it can loosen the muscles/tendons pulling the knee out of alignment, and some corrective exercises will help to strengthen the opposing muscles to balance it all out.
