They just launched some new Pathfinder books that are effectively pathfinder 2.x, with a lot of small (and some larger) tweaks, but technically the previous 2e books are still able to be used interchangeably.
To that end, there’s a Humble Bundle going on where you can pick up a TON of that legacy 2e content in official PDF form, so if you’re interested you should check it out! I believe most tiers include the Beginner Box, which has an intro adventure for new players and includes some sort of single player content that would give you a glimpse into how the game runs :)