Can someone explain bitcoin addresses to me? 4 questions

1) how many are there per seed on my hardware wallet?

2) why does it create me a new one every time? This is annoying as it’s easy to remember just the one

3) what happens if I send it to a previous address I’ve already used? Does it not go through?

4) can I ever use address in the wrong order or used and older address and it screws up the transaction? Or can I do anything wrong by selecting an address manually from my coldcard? What are things I need to be aware of when sending bitcoin this way?

Thanks in advance, I’ve got a general idea but these technical questions go way above my head when I read into it

Thanks in advance