As long as you don't have a capital gain over a certain amount you don't have to disclose from what I'm told. Also when sending with cash app or venmo never send as purchasing a product, cause then the recipient gets a fee and does have to file that. Had a few send to me as a purchase. I had to message cashapp to cancel transaction. They were trying to be slick incase the source F'ed me they could get their money back from me.
This is what my CPA told me and she knows why I use it.