on 11-27-2020 10:31 AM
As @femmefan1946 said, keep your feedback factual. But I'm here to warn you that even factual FB may get deleted from a profile. I had a seller who had an auction for an item I won fair and square (I was the only bidder). They cancelled on me. Although eBay did make them pay by restricting their account, the FB i left on the seller's profile was deleted. I don't know for what reason or how but it happens.
The best thing you can do after it's all over is to block the person and never have communication with them again.
You're going to find a lot of bad sellers here on eBay. And when I mean bad I mean fraudsters, shysters, snake oil sellers, people who sell pirated goods, sellers with bad tempers who make threats and sellers who are just plain incompetent. If you find a good seller and they have a nice amount of revolving stock, I suggest patronizing their store by adding them to your favorites list.