It depends what you want to do, if you're playing around building apps for a hobby and friends and family and you can target Monterey, you could go with SwiftUI

It depends what you want to do, if you're playing around building apps for a hobby and friends and family and you can target Monterey, you could go with SwiftUI and Apple's official tutorials (it runs on older versions but a lot is missing). If you've got experience in React or any other of the declarative frameworks you'll pick it up quickly, it's actually much nicer than React.