I haven’t used yacy in a whole, but i had configured it to auto import and index links from linkding. I also imported my browser history to get started.
Never tried the p2p option though so not sure how well that worked. I was worried about indexing private sites on accident .
I like racknerd for cheap vps. Check their black Friday deals (they’re up all the time).
Also check lowendtalk, sometimes you’ll find good deals.