Updated iPad, but other takes up even more space. How do I get rid of other?

If you see that the “other” category is consuming an disproportionate amount of space on your iPad, this support page may be helpful to you:

Clear Other storage on your iPhone or iPad - Apple Support

Other is cached files and other content maintained by the system. This storage category cannot be selectively deleted - but the procedure linked in my previous reply is intended to substantially reduce it.