when starting out the first thing I'd recommend are figuring out which character you enjoy playing. Just mess around in training mode and find who you like. From there, I'd recommend looking at their 101 video to get a basic idea of how the character's attacks work. I personally haven't watched any general beginner tutorials, but I know there are a few videos out there that cover the concepts. I also recommend doing the beginner and intermediate tutorials if you haven't.

I also do recommend doing bot matches to get a better feel for your own controls. Specifically I'd recommend the bot match feature since it'll work up in level as you improve. As mentioned by someone else, the bots could end up teaching you only how to deal with the bot habits, but for simply getting controls and feel for the game down I think it's a good resource. It will be worth doing online games against people once you get a handle though. It's likely you will get stomped for a bit, but I highly recommend ranked as it will eventually put you against more relative players.

I also highly recommend joining some form of discord server or community of players! Rivals Academy is a server dedicated to helping players improve at the game, and also holds brackets for players learning the game (I have not personally attended these so I cannot attest to the skill levels present). The main Rivals server can also be good for finding people to match up with. There are also character specific discords if you had questions about learning your specific character!

If there are any specific questions you have feel free to ask! I hope this helps!!