How do we generate the bitcoin address for every user, those who uses our website ,and can withdraw deposit ?
2 member already explain the general idea, although using Bitcoin Core isn't the only option to manage user's coin. But if you ask such question, IMO you should hire someone who already have experience to create cryptocurrency-related service.
It is a good idea to hire some to professionally manage the job.
Additionally, I will suggest that you work with btcpayserver.org, which is an open source and free software which will manage all payments for you.
It will generate address for each buys, monitored them, etc it has an extensive documentation and really looks like a professional solution.
