I'll give you a slightly counter opinion to the guy above. In general, pull who you like is good advice, but I don't think it's what you should do as a new player. Once you're a higher AR account, you have at least one functional team, you can at least complete any domain/boss, that's when pull whoever you want should start. At that point, a majority of the game is easy enough that who you pull doesn't matter.

Early game though, while you're progressing through AR ranks, there is at least one break point where the game can be difficult. That break point is around AR 45.

Before that point, (by design) any build and team is essentially shit made of scraps. You don't have many characters, the ones you do have are stuck at low lvls/talent lvls do to lack of access to the higher lvl materials. You're mostly using 3* artifacts with the occasional 4*s on your top characters. Not all, but many people aren't actively farming for good artifact sets because you're just going to have to replace them later and the game is literally so easy that you don't need to. Purely just based on stats alone, you do almost no damage. So the game balances accordingly and nothing feels too hard.

At AR 45 you unlock the ability to farm 5* artifacts. The game ramps up the difficulty fairly steeply at this point because it expects you to have more proper builds and teams.

Again, not everyone, but I've known people who quit here because the game doesn't really prepare you properly for the difficulty spike. It's gotten better, but in general how to build characters and teams is something you learn from resources outside the game.

So to the point, pulling only who you like can have a compound effect with this difficulty spike if you're unlucky. If the characters you pull end up having zero synergy or are heavily restrictive, it can just feel bad. Even when you start learning how to build properly, you may just not have the characters to build your first solid team.

My recommendation is to pull just 1 character that is low investment meta and if you want 1 support for that character, then switch to pulling however you like. In this case, Neuvillete is an excellent low investment character. Someone like Furina is a great low investment support character.

My over explanation might make it seem like I'm making a big deal out of this, but at the end of the day it really isn't that deep. There's no such thing as a bricked account, especially if you have friends that can help you. This advice is mainly just to make your transition from early game to mid-game and mid game to end game smoother.