Maybe ground is dirty ba.
I see.....activation exercises also shd work and a possble solution...there is still a certain component in strength building to it. Actually come to think of it, just side to side leg swings also might do the trick if the issue is not a big one in the first place, just that there is too much momentum to that so not sure if it would work.
Actually no need to lie on the side, standing also can. (athlean x said is better)
When i started running in 2022, i also ankle rotation zhuai zhuai one. hehe.......
Now just do a quick one 10 rotations ok liao....dont even know if it works.

It's probably not too bad a thing for pre exercise as there is movement involved, ie dynamic