iPad keeps crashing for no reason

My iPad keeps on crashing. It started out being once every few days, but now it happens about four times every half hour. When it crashes, the screen freezes from 30 seconds to about a minute, then it usually either turns off or sends me to my home screen.

Normally this wouldn’t be an issue, but I use my iPad to draw, and every single time it does this, my drawings get deleted. These are drawings that I’ve spent days on, and it’s honestly really traumatizing that they’re gone forever.

I’ve looked up what to do and I’ve tried everything. I’ve powered my device all the way off, I’ve made room for more storage, I’ve done everything.

I’m begging anyone for an answer. I’m not able to afford a new device because they’re insanely expensive, so I’m pretty much stuck with my iPad Air.