Above is already a really good answer to the question - Wizards are really a different kind of animal, don't mix and multiclass Int and Cha classes, you are better off going Dex on your sorcerer and leaving Int at 10.
I found this guide really helpful. It explains the finer points of playing Sorcerer, like their point system, and what the best cantrips are.
https://fextralife.com/baldurs-gate-3-wild-magic-sorcerer-build-guide/Sorcerer with good Dex and Sleight of Hand is like a magical Rogue. Sorcerers are also very well suited to playing a chaotic-natured character. They definitely play as power-hungry, irresponsible wildcards. And you never know what the next Wild Magic proc brings. Setting everybody in your party on fire isn't great though.
