If you transfer bitcoins to someone else's address, no matter who you transfer them to, whether it's exchanges or a regular person, you can't get your bitcoins back, it's the same as with regular money, but there at least it's easier to find a person to whom you make a transfer, but here it's almost impossible.
Most like 99% of electronic transfers are reversible.
With banks it's almost impossible to get a payment wrong because if you copy or type a wrong number you also have to type the wrong person name correctly, so the chances of that happening are even less than with Bitcoin.
Second, for other type of payments, that require just an ID or an email most of them are reversible, even cc payments are, you can open disputes you can do x and y.
The main difference is that with Bitcoin you can send to an address nobody has control over it, with banks you can't sent to the account A4544231RBTY988 is this account doesn't exist.
If you sent the Bitcoin to another address, you won't be able to recover it for sure, but if you know the address you sent it to, you can still recover it.
Let me repeat myself!
The chances of the address you have mistakenly used funds to be one that is under the control of somebody is close to
0.00000000000000000000000000000000000000084814644632474391532%
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And if there is a mistake in the address, it was sent to another network
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You can't send bitcoin to another network!