https://www.reddit.com/r/AskEconomics/

It really is the best place. Yes, yes, “reddit bad”. But the “Ask X” subs tend to actually have some decently high quality information because they vet commenters so that actual experts in the field have a much louder voice than others. You’d have a hard time standing up a similar forum on Lemmy because (a) there isn’t as much traffic volume, so experts would be less interested in coming around and (b) because economists would quickly get tired of economically illiterate leftists asking the same questions over and over and then demonizing them when they don’t say Marx was right about everything.