Is it time to end my relationship with my boyfriend?

I'm a 23-year-old woman and have been in a relationship with my boyfriend for over a year and a half. Overall, it's been a positive experience, but I've noticed a few things that give me pause, and I'm not entirely sure if they're serious enough to warrant a breakup. Sometimes, I feel like he talks down to me, possibly because he's an only child and hasn't had much experience interacting with kids. For instance, when we're playing video games together, if I make a mistake, he tends to get upset and grumpy. I often find it hard to argue back because I process things differently, and articulating my feelings can be challenging due to my ADHD. He's quite assertive, and comments like, “You weren’t thinking when you did this,” or “What you’re thinking doesn’t make sense,” come off in a frustrated tone rather than a calm one. These comments leave me feeling inadequate and as if I'm to blame for the situation. Whenever I try to express my feelings about how he speaks to me, he often considers my concerns unreasonable or becomes frustrated with me for bringing it up. He claims that I'm the one making a big deal out of nothing. Am I overreacting? This doesn’t happen all the time, but it happens often enough that it sticks with me and causes me to cry. P.S. I apologize if my writing isn’t great; I wrote this late at night and just needed a place to vent.