My 18(M) relationship makes me feel conflicted

I’ve been with my girlfriend 18(F)for about 7 months now and it’s a long relationship for me due to very bad choices of partners in my past. My girlfriend and I are extremely different, she enjoys being together every second, texting every chance she can get, and work ethic. First I do have feelings and love my girlfriend but I really need my time alone to play games and just decompress because I feel like I’m walking on a tightrope around her, if I don’t give her lengthy responses to her questions she gets irritated and gets snarky with me, if she is hangry she gets rude with me, will delve into her friends personal lives including the stuff behind closed doors and vice versa about ours(not anything recently due to my a sexuality discovery), and if I give her a slight of attitude she’ll get annoyed and upset with me despite being confused why I do the same. She also hates school and complains about it so much which I understand but I personally enjoy school and am going to college this year and even though she knows that she continues to bash it and it feels off(she does this with other things). She also acts like it’s the end of the world when her mom asks her to work an extra shift when she only works twice a week for 8 hours and will act like she’s dying(she did wrestling so it feels unnecessary, then again we are different people). She also texts me I miss you over and over again with a sad emoji even if we just saw each other and it feels unnecessary, I’m not saying I don’t text her things like that back but not right after. She also gets upset with me if I don’t text her consistently while I’m with friends and it bothers me because I’ll text her but that’s like my own time with my only friends but doesn’t say anything if it’s the other way around. She is as well better off financially then me because I live with my grandmother alone and her mom owns a business and she offers to pay for food a lot which I try to argue but shuts me down then uses it as blackmail against me(something her mom does and she complains about a lot). I’ve also driven her across my small town 5 separate times back and forth because her car isn’t working perfectly and she gets too inebriated to drive and uses that to convince me to drive, and she also enjoys peer pressuring me to join. I can’t tell if I’m maybe just like crazy or if this is just a big bucket list of pet peeves/ boundaries we need to discuss. I’ve also brought half of these issues up with no attempts on her side to change and by the way I know myself am not perfect but I try to avoid the things that make her unhappy, like if I just don’t sound overstatic to see her after a single day or if I just get really bothered and sound firm when saying stop, this mainly was caused by one time where she kept breathing tuna in my face and I despise tuna and I asked many times for her to stop and I eventually not yelled but raised my voice slightly and went stop which was terrible apparently.(I never yell) She also nitpick how blunt I am with how I talk, I don’t sugar coat things unless it’s needed I don’t wanna lie to her about serious things and I will tell her if she’s acting outrageous(I don’t say she’s ugly or annoying but I will call her out for doing something that is unhealthy like getting inebriated consistently).

TLDR: gf of 7 months is almost opposite and to every way of me, has double standards, etc. and makes me feel conflicted to whether I’m crazy for feeling unhappy or there’s just a lot of boundary needing to be set. I understand I have my own issues and try to change but feel no effort back.