>>33290841 (OP)look up "anime convention [nearby city]" on google or bing or duck duck go or ask jeeves or yahoo or whatever preferred search engine.
Obviously depending on your city or regional location there may be only one convention per year that you cam make it to. There may be other anime-related hangouts like manga cafes and other anime-adjacent things like retro barcades and trading card tournaments or even LARPing groups.
Obviously the bigger cons are going to be a mixed bag of pure autists and normies doing it for social media and everything in between.