Am I changing?

I'm a 15m INFJ, or so it says on every MBTI test I take. Might be just me but sometimes I wonder if I truly am an INFJ. I meet all the criterias but for some reason I just doubt.. Anyway the main point of this is that I think I'm entering a stage where I'm starting to yearn for friendships. My whole life I haven't been the most social. I can be social but I avoid trying to make friends and instead let those people come to me, but now for some reason I feel so derived and lonely that I'm starting to try to talk to random people on discord, and getting slightly overtime, more talkative in school, but then right after I get so burnt out. Are you guys experiencing this also? I'm just really curious, anyways it's 1AM for me by the time I'm posting AHAHAHA