Which version of iPadOS? Do you use an adblocker? Does this happen when a specific website is open? Does this happen when you use another browser or app?
15.6. Everything is stock, I don't use extensions. Sometimes it'll randomly reboot with other apps (maybe once a week) but it's mostly with Safari which I use on a daily basis.
I will note that this has been happening since I've owned the iPad (since iOS 13 or whatever the first version was shipped with the 11" 1st gen.) It just hasn't bothered me enough to go to Apple about it until recently.
I own a 2018 iPad Pro as well. Here’s some things that could help:
1. Free up storage, keep around 10-15GB free
2. Restore and set up as new.
It has only 4GB ram, and I experience tabs reloading all the time. Crashes happen when I’ve no storage left
I've got 34GB free space, I restored from new about a month ago.
I'm thinking it's just Safari running out of memory fast. Especially with sites like YouTube and Reddit. I could use the apps but I prefer the browser UI for both sites.
I might get the battery service from Apple, which they will give me a replacement iPad Pro, and see if it's hardware after all. I've never seen an iOS device reboot so often.