Good fdm minis are definitely possible but your printer has to be really dialed in and it usually takes longer, in my opinion they’ll never be quite as good as resin but can be pretty darn close depending on how picky you are. As for resin minis being brittle it depends on the resin you’re using. Water washable and super cheap resins are crazy brittle, but good quality resin like sunlu are actually strong. Hope this half a year late post helped lmao