Vent about stuff I’m mad and sad about

I have never vented before, I don’t do it because I have always felt like I didn’t want to hurt anyone. That’s why I have only broke up with someone once. I also have a problem with speaking to someone about my feelings, that’s the main reason why I love art and music, I don’t have to speak to them for them to understand. I’m also a little angry at my friend, because I just had a realization. I might be a little over dramatic but, I feel like they don’t actually care about me. Anytime I talked about how bad my day was it’s always shifts to how bad her day was. Any friend I have ever had has always told me how good of a life I have and told me they didn’t understand why I am sad. It’s mostly because I have a good household(which my parents have relationship problems) and a good family(which I do), but I feel as if that doesn’t mean I can’t be sad but, I don’t know if that’s right or not. They’re also talking about how good of a friend their other friend is, although I might be a little jealous i don’t know. They constantly insult me with my music taste and my art style, she said she is impulsive but I don’t if that’s really a excuse. When my ex broke up with me, anytime I got sad and frustrated about the situation, my friend would start saying the “I told you so” thing and would mention it constantly(keep in mind I was extremely depressed and lost a lot of self confidence since I felt dumb about not breaking up in the first place). Non of my friends even supported me until I actually had a huge mental breakdown(which made me worse) and it made me gain the mentality of I have to pull myself up instead of asking for support.