It is possible that people may send Bitcoin to an address which haven't yet created for example. Well, anyone can send Bitcoin to any address (considering correct format). What if the address hasn't been generated yet?
The bitcoin network has absolutely no concept of whether an address has been "created" or not. As long as the address is of the correct format with a valid checksum, then you can send coins to it. I can generate a million addresses on a permanently airgapped computer, and no one in the world except me will know about them.
This is true, there isn't a database where every freshly generated bitcoin addresses are added, so, we can assume that absolutely every address with a correct format already exists. On another hand, I would say that absolutely every possible bitcoin address exists, when generate a new one, you simply acquire keys of that address which has already existed from the very beginning.
Just created a SegWit address on offline device and manually wrote down the generated address on my online computer, here is the address: bc1qyswtdfm8ml0e2n7dwhgyfxjhqjuxhs0ut5almp
Now, check it yourself. Personally, I validated this offline generated address via various tools.
Imagine, I have sent Bitcoin to an address- 15wJjXvfQzo3SXqoWGbWZmNYND1Si4siqA
We don't know if this address has already been created or not but for understanding what I'm trying to know, we assume that the address hasn't been created/generated yet.
In 2050, someone created a Bitcoin wallet and generated an address, coincidentally, the address is the same address which I have sent Bitcoin in 2023. Won't he get the Bitcoin? My bad that I'm still confused despite having two great explanations above. It would be cool if you would explain in theory instead of applying technical terms
Edit- I read the reply again and it sound like in theory it's possible if someone is lucky, isn't it?
You should assume that absolutely every address exists, we just haven't found their private keys.
By the way, if you want to burn coins, just create an address and don't save private keys. If I were you, I wouldn't worry that one day someone will discover the private keys of this specific address because chances that one randomly generates this particular address is almost non-existence and so non-existence is the chance of someone successfully brute-forcing that address.