I struggled with similar anxieties. It is important to play a class/character that 'feels' right to you. I started with a fighter, but then you get a fighter right away, so that was kind of eh. I ended up going with a cipher... a very fun class, very powerful, and you don't encounter one for a while into the story so it won't be redundant. I'm finding it to be a good introduction to the game.
I also wanted a character that was able to get good conversation options. It's turning out to be less critical than I built it up to be in my head. Nonetheless I am glad I gave 14 resolve to my PC, resolve has awesome convo options and also makes you a little less squishy.
Ultimately you just have to commit to a character and play a bit so you can get a better feel for the game. Once you do you'll have a better idea of what's important to you in a character, and what character you actually want to play. No shame in doing some trial and error for a while, just accept it as part of playing the game. The game isn't going anywhere, no rush!