How have you dealt with growing old and boxing?

Recently turned 30, when I started boxing (24 yo) I weighted 68 kg and now Im at 79kg (that is considering Im around 173 cm).

During the past 2 months I have kept training like I always do and sparring like I always do, but I have started getting considerable discomfort in my right hip (3x week 1.5 hours per session).

Usually after an intense session I will feel something strange when bending my right hip (if I hold my knee at 45° from my body), I'll also feel it in my knee and in my big toe articulation.

Now I dont know if this is a biomechanics thing or an age thing.

Here is a sample of a sparring, Im the orthodox one:

https://youtu.be/g6jMgabmy3s?is=nqxDQaqalpWM0Xgv

Any other boxer started to feel this upon hitting their 30s? How do you deal with it personally?