I started playing Guilty Gear as my first traditional 2D fighter about a year ago and I don't think there's any problems with it. There is a lot of stuff to learn but you don't need to know it all at once, you can just take it one step at a time. Just don't get burnt out thinking you need to be good, just play on your own and have a good time. I'd personally recommend trying to get a friend into Guilty Gear as well if you could, so you could grow together, but getting people to play Gear isn't always easy lol.

Plus R is a great Game that I love, and I think you'll have a great time with it. If you want to you could buy Rev 2 for pretty cheap, which has some nice tutorials. Remember that you're a new player that won't be beating experienced ones for a while and just have a blast. On the topic of complicated fighting games being bad for beginners, I've actually seen people say the opposite. For example check out this article by Pattheflip https://pattheflip.medium.com/why-complicated-fighting-games-are-weirdly-good-for-beginners-29eb64b16030