How do you find good multifamily residential deals? (2-4 units)

[Ben Feder]

How do you find good multifamily residential deals? I am looking to buy a 2-4 unit property to BRRRR/house-hack. Where do you look/who do you ask? What websites do you check/professionals do you talk to/other sources? Also, what makes a small multifamily deal a good deal? Do you check comps to determine your strike price/use cash flow to determine value/other evaluation techniques?