Hope this helps with some of the frustration:
Proxies I use (not affiliated).
They have their issues, but 95% of the time everything works fine. Haven’t had any PVs related to proxies since I’ve been using them.
Get some sims from the market place.
Buy yourself some aged accounts and experiment with those. They cost a few bucks year, unless you are doing CPA. Test, test and test some more. Burn a few. Figure out what works for you and your niches and put that to use for your main accounts.