How do I get space for more skills? I'm still yet to play the game, so your brilliant suggestions are just words to me at the moment haha! 😆 Thank you so much though, I can't wait to learn and understand everything you've suggested!
You can use all skills, but having proficiency in these skills, or high attributes (like wisdom or strength) in each skill's related attribute makes you more likely to succeed on these kinds of rolls. So, you want to make sure you have high dexterity (top priority) for good stealth, acrobatics, and sleight of hand rolls. You want to make sure you have high charisma (second priority) for good performance, persuasion, deception, and intimidation rolls. You want to make sure you have decent wisdom (third priority) for good insight and perception rolls.
Certain backgrounds can grant you certain proficiency. You can also choose some proficiencies. Here:
https://baldursgate3.wiki.fextralife.com/Backgrounds