You’re a 23 year old adult and your conclusion was ‘he’s lazy’, do you not understand how bad that sounds? Where’s the caring from your side? Where’s the talking to him and asking him questions instead of just going off on him?‘Depression didn’t seem plausible’? There is SO much information available online that you could have looked at.

Of course you’re not getting emotional support from him, he can’t even take care of his own atm!

You either start shaping up to be the support he needs or go, although your last sentence suggests that you’re not willing to do the former.