My carpet is getting big bumps ???

[Quasar44]

I don’t know anything about Home improvement

I noticed several large carpet bumps ??

This seems to be on areas I walk over the most .
Also there is an area where I practice mma stuff and the carpet is very bumpy ??

Very alarming and I don’t know how to fix it

One web page said I have to move all the furniture out and re stretch and re glue it back
This looks hard

Also, it just occurred to me that I confused about the glue. Yes, with new installs, you scrap up the old adhesive and slather on a new layer, but if you're just stretching a small portion of the original cut, do not pull up what you don't have to. Just re-glue the stretched portion, which is what I meant.

Can I still practice mma on the carpet ??