How do I buy SOL with phantom?

How exactly can I purchase SOL using Phantom? Could you please elaborate on the steps involved? Is there a specific platform or website I need to access for this transaction? Also, are there any fees associated with the purchase process? Would it be possible to use a credit card or does it require a bank transfer? And finally, how secure is this method of purchasing SOL? I'd appreciate if you could provide some clarity on these points.