Ionic react without using typescript

Hello, thank you for this support … i really like the way you support me … very professional.
i appreciate your efforts.
that why Ionic has a lot of users … and it is a very good platform.
i have some questions, cause i amionic new in this platform.
1- everything used in react js can be used here also? mean can i choose external npm that works with react js ?
2- with Ionic react can i built big applications, with a lot of data?
3- is capacitor export really native apps?
4- all the Native APIs - Ionic Documentation ,
ionic native working with ionic react , mean i can use them ?

Best regards
Elias