I am relatively new to sex and I have yet to make my girlfriend orgasm, any advice?

Both my girlfriend and I are 21 and we started dating about 8 months ago. We’re both each other’s firsts and are somewhat new to sex. Additionally, we don’t get to have sex very often at the moment, since for the time being we aren’t living close together, due to school and work schedules currently.

I asked her not too long ago if I’ve ever been able to make her orgasm, and she told me no. It made me feel really inadequate, especially since I see, hear, and read all over the internet and people talking about how other women are able to be satisfied by their partner, and I know she can get to that point on her own. We had a discussion about it, where I told her that it’s important to me for her to feel satisfied as well in our sexual relationship, and she also told me that she puts pressure on herself to make me feel like I’m doing things well. It was a hard conversation to have and I felt bad about myself for making her feel like she needed to put pressure on herself like that, when it’s the last thing I want her to feel, I just want her to enjoy it (which she says she does). During this conversation, I also asked her if she could teach me, or show me, what she likes so I can learn more about her. She told me “I tried”, and I thought that maybe she has given up on me ever getting better for her, although I realize now that it was probably just bad wording and she didn’t mean it in that way. I met up with her over a recent weekend, and we had another conversation about making things as good as possible for each other, and this one went better because we both agreed that we were both just new to this and just need to learn a little bit and maintain communication with one another (but really, how long can we consider ourselves new to sex?). She said she appreciates me asking her every time how it was, and asking to learn more about her, and she says that not all men would likely be that considerate and caring on this subject. However, I forgot to bring up her telling me that “she tried”, so I brought it up again on a video call a couple of days later, just wanting to get it off my chest and clear my head to make sure she didn’t actually feel like there wasn’t any hope for improvement. Unfortunately, this conversation was a little bit more emotional as the topic of her putting pressure on herself came back, and I once again told her that no matter what she does, I’m always happy just to be with her regardless of how our sexual encounter goes. One thing that was brought up was that she said that sometimes, it’s hard to communicate about what feels good for her, and I felt awful for not realizing that sooner. I’m not a woman so I wouldn’t know the complexity behind these things. So that’s just something that has been bugging me really badly and makes me feel quite guilty, when all I want to do is help her feel satisfied, while also feeling like I’m inadequate because there are other men that seem to be able to do it with ease.

I’ve also been reading about lasting longer, getting better with my hands, and using my mouth as well. So far I haven’t had any luck, even though in recent times we don’t get to see each other often as I mentioned before, and haven’t had the most opportunity to try some of the things I learned from reading. I know I’m supposed to take my time with these things and let things build up for her, but sometimes she wants to move onto other things when I’m using my hand (which is the way she reaches orgasm herself), or when I use my mouth it doesn’t feel as good and again she wants to move on (even though from what I’ve read, I should use my moth for longer periods of time for everything to build up, usually, since that’s the way most women reportedly reach orgasm).

I know that one time, a while ago, I did get closer to making her orgasm with my hand, but I feel like I haven’t been able to get there since.

All in all, this makes me feel bad about myself and for her as well. I worry that if I can’t make her orgasm, she might wonder if there is something wrong with me, or why other men can make their partners orgasm while I haven’t been able to yet and she would need it from something or someone else?

So with all that context, here are my questions:
I know I’ve brought up the topic with her multiple times, what is the best way to move past this so that we can focus on relaxing and enjoying the process together? I feel that maybe I’ve brought it up too much and accidentally made her feel more pressured, when all I wanted to do was let her know how I was feeling and how much she matters to me. How can I help her feel less pressured? How can I build my sexual confidence and help her build hers? And finally, any advice on how I can improve my skills in the bedroom in general and make her reach orgasm?

Thanks very much in advance.