my best advice is research, research!
One great resource is Clint’s Reptiles on Youtube, and his channel has several videos about the best species for people new to snakes, or the most easy-to-care-for pets.
He rates them based on their various qualities so you can choose your specific preferences in Size, Diet, Activity Level, and how often you’ll see the animal out and about in its enclosure, or whether you can hold it a lot. The kind of pet you want is specific to you, and the experience you’d like to have with your pet.
I have a couple of spectacular snakes, A Ball Python and an African House Snake, but some people might not prefer them because one is Crepuscular and one is outright Nocturnal- I don’t see them during the day, just morning and evening or at night.
But they’re both fantastic to handle, and incredibly gorgeous in appearance, and very docile in temper, and very inquisitive personalities.
Neither will get very large- I am disabled and can’t handle something with a bigger “hug” like a Boa Constrictor, so a Ball Python is the largest snake that’s right for me.
Some species to look up, for a start: Ball/Royal pythons, Corn snakes, Western Hognose snakes, Sand Boas, Boa constrictors, itty bitty African House Snakes which come in many colors, King Snakes, Milk Snakes, Children’s or Spotted Pythons (they’re close relations) are tiny but wonderful, Garter snakes which you keep in little groups, Angolan pythons are rarer but very like a Ball, Hog Island Boas are smaller variants of Boa, and the SuperDwarf Reticulated Python is an active and lively long boi.
Of course, don’t get a “beginner snake” you don’t like much just because people said you should have that first IF what your heart adores is something else like a Blue Beauty Asian rat snake. It’s just that some snakes are easier to look after without as much preliminary work and learning.
I’d just say: If there’s a species you love but it’s said to be for more advanced keepers, I’d go get experience helping other people who have more experience with caring for their snakes, like interning for a good breeder for a little, so that when you get your Dream Pet, you’ll have those skills ready.