Wow, I have heard it all now

I had an Ebay agent from the USA tell me Ebay might not be the best platform  to do my selling after asking what backup I had from Ebay as a seller, the answer is none. I have had nothing but worry, frustration, time-wasting. I have been on the phone numerous times trying to communicate my concerns to Ebay about my bad experiences as a seller. I have asked for malicious feedback to be removed without success.  I have been round and round the Ebay AI assistants and Help pages without success. I have twice been assured by Ebay agents things that have later proven not to be true. I have asked for humans to review my specific concerns and act on them. Is it only me, or is anyone else getting this? I don't really want  to get into the specifics of what I am talking about, but I can if anyone has the time. Frankly I have lost faith in this platform and will only list low value items where dishonest buyers will be less likely to rip me off by abusing the returns process, and costing me a considerable amount of time and money.