okay this might be a bit of a long response but here it goes.
House hacking in orange county is difficulty(duh we all knew that). Basically what you're going to encounter is either duplex's in the older areas of the OC aka santa ana, fullerton, la habra area that aren't usually rehabbed so need a good amount of repairs, or you start seeing a lot of duplex's along the coast but I think most of us young people that want to house hack don't/can't dish out a million dollars plus for a multi family. So in my opinion that usually leaves a few options.
1. you can deal with the repairs. Either get a hard money loan and do the repairs to update these older homes or a 203k loan to get rehab funds and fix up the property and get one of those older but cheaper multi families in those areas.
2. Get roomates. Easiest way to househack but you give up privacy. If you don't care, rent it out to friends, or simply find good people to rent rooms to (maybe students since they'd be more likely to rent just a room) then this is definitely the easiest way to househack a home. I'm actually helping someone right now try to find a condo or SFR to do this in because he wants to move out to the OC but we know rents are crazy high.
3. Lastly, get a property with a MIL suite or ADU. They come few and far between but some homes in the cheaper parts of the OC do have them attached. Only thing is most agents list them as SFR properties which means you need to be scouring the MLS for those rare opportunities. Then you can live in that separate suit/ADU, and rent out the main house, or vice versa, and have someone else paying most of your mortgage! And most importantly(at least to me) still have your privacy.
So thats my opinions on the topic, also as a rare twenty something that also wishfully wants to house hack. It's possible just have to look harder than areas in the midwest where cheap duplexes are everywhere.
As far as meetup goes I am aware of the los alamitos meetup meetup because the host of that meetup actually co hosts another meetup with myself and my partner in newport beach! Next one should be scheduled for December 10th so if you want more info feel free to PM me. We do focus more so on out of state but we always have people that like to invest in state and our meetups are usually in a roundtable like format where people can freely ask any question so its a good time. Planning a happy hour would be cool tho! Although our meetup does usually have drinks if thats what you guys are looking for at the happy hour lol
Hope I helped!