Welcome to the forum from the beautiful woods of Maine!
There’s many knowledgeable members here who are willing to help you with any questions you might have. Search the forums using keywords and if you don’t find an answer, post your questions...
If you just need a parachute and it doesn't need to be certified by any agency then slap one of these on an Air 3S or Mavic 3:
https://www.amazon.com/Flight-Upgraded-Umbrella-Parachute-Classic/dp/B0CSWHXQP7