I haven't ever used Coinpot, unfortunately. However, from my research, I saw they had several withdrawal options. The one I'd recommend is Coinbase, though. I've been using them for over a year now, and I've had no problems at all. Coinbase would let you transfer your funds to a bank account, or they have a credit card you can use to spend your funds. Or, you can send from Coinbase to a more secure wallet (such as Exodus), or to a hard wallet.