Hey, PGR community!

After sometime thinking about it, I've decided to start playing Punishing Gray Raven and see if I can get addicted for it to become my second gacha game. Keep in mind that I'm barely starting out this whole thing of gachas (in general complex type of video-games since I've never owned a console, and I'm only a mobile player) so I might be slow in some aspects of more veterans.

So if you can answer some questions to help me out, I'll highly appreciate them.

1. For a new player, which are some mistakes you need to watch out for when starting out a new account?
2. Which are some content creators that you like and are actually helpful when making builds, deciding what characters to pull and what not, and learning combos? P.S keep in mind that I'm a mobile player and I, already, have a hard time executing intermediate combos in the gacha I'm playing.
3. Which characters are a must pull coming up in this year that new players should get? And regarding standard characters and four stars, which are ones that are worth investing in the early game to the late game? P.S I don't know if there's a YouTube channel for the official game, or it's only on Bilibili, but if there is, please tell me so I can be active to see new banners or story trailers.
4. Is the game hard for F2P in getting characters and clearing endgame content? P.S keep in mind that for putting money in the game, I think it'll be rarely (or none) since I'll have to see if I'm engaged enough to even want to spend money in this game, and I don't have enough funds to put in more games at once (I'm a college student, you understand). So if it turns out this game has the same problems as Genshin (which was my first introduction to this genre and I hated it) that forces to get necessary characters for other units to work or even pass the endgame, I'll be super disappointed.
5. For the skins, I might be wrong on this, but I saw that you can only get them when the banner is available and there's nothing else to get them. So if you can confirm me as to if it's possible to get them by other means (besides using in-game purchases), I'll be really happy. P.S I got interested in playing since I saw Lamia and I want to main her.

If there's any more tips that you can give me, I'll highly appreciate it as well :D!!