Base skill and tool proficiency needs to be fixed.
First the skill and tool proficiency are selected in this order.
Second if you already have a proficiency in a skill or two from two sources you may choose another proficiency of the same kind. (skill or tool)
Racial proficiencies. The Elves perception or Dwarves choice of artisan tool's from smith's tools, brewer's supplies, and mason's tool count as racial proficiencies.
Class proficiencies. The class you select determines the amount of skills you can choose; 2-4 depending on class bards are the most flexible of course, as well as which ones. They also provide tool proficiencies of their own. And a language proficiency in the case of druids and rogues.
Subclass. Certain sub classes grant additional proficiencies: College of Lore bards get three additional skills at level 3 for example.
Background. Your background determines your additional starting skill and tool proficiencies but see the second note above.
Base skill and tool proficiency needs to be fixed. First the skill and tool proficiency are selected in this order. Second if you already have a proficiency in a skill or two from two sources you may choose another proficiency of the same kind. (skill or tool)