Hi, a FET will be very different depending on if your clinic advises medicated or natural. And it's also different from clinic to clinic.
I've had one of each so I'll share based on what it was like for me.
If medicated, you will have a scan on day 2-3 of your cycle, begin taking estrogen pills or injections, then they'll have you start taking progesterone a few days before your transfer and you continue that at least until the test. They take over your cycle completely so that your follicles don't grow and you don't ovulate, making it easier to schedule appointments etc, and there are fewer clinic visits.
If natural, they also scan you on day 2-3 on your cycle, and then they have you come in pretty regularly starting on around day 8, because they need to time your transfer to your lead follicle size and your lining thickness. If it all works out, you might take an hcg shot, and they time your transfer 36 ish hours later. More visits and more uncertainty (my transfer was almost cancelled because my lining thickened too slowly) but if you don't like the drugs or the idea of your cycle being taken over, this option might be preferable.
Success rates are similar, so it's really up to you. But obviously women with hormone imbalances or too low progesterone would benefit from doing the medicated cycle, and clinics prefer it too because it's less work for them. I would personally lean towards doing natural, but I might advise that you only choose that option if your clinic measures your estrogen/progesterone levels throughout the cycle...mine didn't, so I have no idea if my transfer failed for a preventable reason, for example because my progesterone was too low.
Hope that helps.