I took up Yin Yoga, which has really helped with my flexibility and recovery. There’s a few YouTube videos you can try and I’d recommend trying out your local gym to see if they have any Yin classes.
https://www.youtube.com/watch?v=O_Vg-j5lkuA&t=1s
https://www.youtube.com/watch?v=dCv4tagvnXg&t=1201s