highlighting a region doesn't work

I recently got a new computer and installed fedora 36 on it, then i installed emacs via the dnf package manager and got this problem where when i press C-SPC the mark is apparently set but moving around doesn't highlight text. Not knowing what to do (I only used emacs for a few weeks prior to that), I installed the flatpak version instead, which produced the same result, I have no clue what to try next, I would appreciate any suggestion

I think the region being "highlighted" is controlled by transient-mark-mode. Is it disabled?

Sorry, but I'm not sure how to, Do I have to add something to my .emacs?

update: i got it to work, It was not a problem with transient-mark-mode which was activated but it was i problem with the background color in my font face apparently thanks for your help c:

I'm glad you discovered the issue. As I was reading your post I expected it was a color/contrast issue. For reference, if you are ever not sure about what is being highlighted, I suggest killing it with Ctrl-w. You will immediately know if it did something. Another trick concerning the kill-ring. If you ever aren't sure about what you've added to it, you can use Alt-y instead of Ctrl-y to browse the kill-ring letting you see what you have done and making it easy to chose the snippet you want.

Thank you for your help and your time, I'll remeber thos things in case it happens again