I wanna rant, can I?

I'm from a place where people don't believe things like mental illness, coz "everyone goes through it, it's normal you are not the only one" and I know! I know but that's not the point! I've been a person who avoids problems, I get easily anxious about things and avoid doing it all together. For as long as I know, I've been like this and only recently did I realise that not everyone feels this. I thought this was due to my introverted personality or my reluctance to take any risks. Also, There is nothing that i like to do as a fun activity. I enjoy staying in my room and reading manga, manwha whole day long, I'd rather not talk to people altogether. I've no other desires. And I thought this was normal. I still think this is normal idk. So basically I want to know if there is indeed something wrong with me or is it just in my head? You see I've a lot od friends, I'm not necessarily sad or happy. I simply exist and I feel I don't have a purpose to live.