A new bitcoin block is generated approximately once every 10 minutes, but the interval can be 5 minutes and 20 minutes. Do not use bitcoin for fast payment. Better use Tron, Litecoin or other coins where transactions are much faster.
He certainly can, but I have to suggest using an LN wallet. So far LN is very supportive of instant payments and there is not even a fee
[very inexpensive] and he should give it a try before coming to a conclusion.
Another option if the OP wants to make a fast transaction with bitcoin is to use a much larger fee than recommended. I think he's just having problems because his wallet doesn't support RBF so he has to have pending transactions because maybe the mempool is congested or the fees are too low, so if the OP wants to use bitcoin as a means of payment then he should use the right wallet and make sure it supports RBF.
Suggestion: Move thread to bitcoin discussion.