I'm a 28-year-old guy, and I'm unsure about my girlfriend, who's 29. Is she overreacting, or are we just not on the same wavelength?

My girlfriend (29) and I (28) have been together for a year and three months. For some context, I was single for over four years before this relationship. When I entered this relationship, I had some female accounts on my phone—none of them sexual, just interests like anime and gaming (though some of them had OnlyFans links in their profiles). I was completely unaware of that until my girlfriend mentioned it. Once we started dating, I removed those accounts. One day, she went through my social media and confronted me about those accounts. I apologized and agreed to unfollow or uninterest those profiles. After some time, she checked my phone again, and to my surprise, she confronted me about a TikTok account I followed that features a British Latina sharing her life experiences. I was puzzled, as her videos don’t show her body—she was just sharing makeup tips. My girlfriend felt threatened, saying the girl was prettier than her, and made me unfollow her. I reassured her that nothing could threaten her and that she is the most beautiful girl to me. Fast forward to now, she checked my TikTok again and brought up another account I follow, "Juliastunts," thinking it would be fine since there wasn’t an OnlyFans link. This creator does comic and anime conventions and interviews, but my girlfriend felt uncomfortable because some videos showed her dancing or wearing a crop top. I was confused about the issue with the crop top, but eventually, she decided to block her on my TikTok. She also questioned why I liked a video about a guy making his girlfriend in the game "Monster Hunter Wilds." I thought it was a cool idea since I could create a character of her in the game too. However, she pointed out that the guy shared photos of his girlfriend at the beginning of the video, including one where she wore a crop top. I found myself lost again in the conversation. Additionally, she feels insecure about a video game called Marvel Rivals because it features female characters in body suits and crop tops. I genuinely don’t understand the fuss about crop tops since they appear in various media—from kids' shows to novels. Now, she’s worried I might become more "sneaky," but I've assured her that nothing will change. I'm seeking some advice because I feel lost on how to handle this situation. Thank you.