Accidentally uploaded my crypto csv's twice and there are too many transactions to go through and pick the right ones. Any way to delete them all and start over?

As long as you have not paid yet or registered, you can clear and start your return over.  See the link below for instructions on how to do this.

Clear and start over your return

I have a lot of K-1 and and 1099 and W-2 info already entered and would prefer not to start over. Any better ideas?