Girlfriend gets upset over my small jokes?

So me and my girlfriend have been together for a bit. We are going through a long-distance relationship where we are 3,000 miles away. It’s not easy for either of us. We used to date over a year ago however that relationship was quite toxic and I didn’t treat her the best. We decided to start things back up again 2 months ago. Recently we have been having some issues where she is getting upset over the jokes that I make. I’m a jokey person so I don’t see that as a big deal but she does

For example, 2 weeks ago we were playing a video game together and she comments on a random player's username saying “oh I like his username it’s funny”. Trying to make a joke, I say “oh well if you love his username then you should go be with him since you seem so in love with him” obviously I don’t want her to be with him but she took it the wrong way. She got upset and I responded with “it’s just a joke. Anyone with common sense would understand “ I don’t understand why she is getting upset for these small jokes of mine.

I also sometimes also call her “crazy” as a good thing and she got upset about it. Like “Oh babe you’re so crazy” Honestly I call everything and everyone crazy, and I’m not meaning it in a bad way.

I tell my girlfriend that she just needs to chill out because our relationship won’t work if she doesn’t. She says that I don't validate her feelings but she's taking these jokes of mine too far. What do i do?
Girlfriend gets upset over my small jokes?
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