Kegels Too Strong, Breaking Toys? Help!

My suction cup toys never stay stuck to surfaces no matter my position or how wet I am, and my vibrators always end up breaking after a few internal uses - once even on the first use! (All toys are from my local sex shop or PinkCherry)

I'm mostly attracted to folks with vaginas so I can't really speak on how people with penises have felt having sex with me, but I can say that even simply fingering myself is often uncomfortable in the hand department if I bear down or involuntarily clench.

Is this a normal thing or is there likely something else going on?