Is it true that once you get a bladder infection, you keep getting it?ㅠ

Why do we get tonsillitis?ㅠ

Once I get cystitis, I get it again whenever I feel a little tired or exhausted.

I'm wondering if this keeps happening once it occurs.

I'm feeling unpleasant, and the pain is hurting, making me very uncomfortable.

I'm also curious about how to prevent cystitis.

I searched the internet, but there was only hearsay information, so if anyone has experience, please share.