Would you recommend a certain character for noobs? I've been rolling with Green Arrow mostly.
My experience playing Injustice is a bit basic, but regardless of the game you're playing, you should focus on a character that you like, especially if you're a beginner.
Some characters are easier than others of course and some are definitely not catered towards beginners. That being said, if you really want to improve at a fighting game, you should stick with a character you want to play. Doesn't matter if it's because you like the character itself or their playstyle (liking both is ideal though!). If it's a character you
want to play, you have greater motivation to improve with them. Regardless of where they place on a tier list - which has little value below high-level play - if it's a character you like and want to play, you'll improve steadily since you're personally invested in your character.
So keep messing around with characters. Don't feel pigeon-holed into sticking with one character because they're the only one you can win with. Learn what each character can do and try to figure out what you like in a character and the kind of playstyle you prefer. As you play more, you'll be able to get a general idea of the characters you're interested in and with further experience, you'll figure out which ones actually really click with you. Don't worry too much about losing; it's rough but it's part of the game and isn't exactly surprising when you're sometimes playing against people that have been playing fighting games above a mashing level for several years.
There's surely videos to be found and streams to be watched for Injustice, but do keep in mind it's not the most popular fighting game around here so there's not too many people that can provide specific information for it. In the end though, just try to have fun! You'll improve naturally just by playing if, as mentioned, you try to learn something with every loss. You can worry about the nitty-gritty once you've gotten more comfortable with the game and feel you've hit a wall that requires more intricate knowledge to pass.
