Has anyone’s tooth randomly moved throughout time ?

Okay so I had braces when I was 13, NEVER wore my retainer after (I know, I know) my teeth thankfully never shifted by some miracle. I am now 26, and there is this ONE tooth that has started to move ?!?

I dont have dental insurance at the moment but I read it’s normal as you age ?? Wtf 😩

Has anyone gone through this ? What would be the solution as it’s only one tooth?