Okay so I’ve had to unscrew my yoyo a hundred times and now it won’t tighten :’( is there any way I can fix it?
Sorry, sounds like it is stripped. If the axel is stripped and not the threads of the yoyo you could just replace the axel.
You can also try using teflon tape around the axel.
another common thing is to use loctite on the axle on the half that won’t screw together
If that’s not an option 3yo3 offers retapping
In the future try to never unscrew your yoyo, unless you have to replace the bearing or response. If you get a knot, pick it out with a needle ;).