That question is very subjective. It would depend on if you are looking for a larger constrictor or perhaps another colubrid.
If you are looking for a large constrictor, my vote goes to a boa or even SD retic.
If you are looking for a colubrid, cant help you there.
The key is you need to do the research beforehand. Know what you are getting into and the costs of said animal and evaluate whether you have the funds and time for them. Really only you can answer that question.
As for snakes that a single person can handle, there are boas, SD retics, carpets. Caesar who is my SD retic is 7-8 feet and i can handle him solo no problem. He is a handful as he is always on the go like most retics but nothing i cant handle. Boas are much more laid back, kind of like a huge BP that isnt scared or hides.
But again, cant stress it enough, do the research for the snake you are interested in and then ask questions about that snake. Your question is too broad and generalized so you are going to get all kinds of different answers.
And dont be deterred by any snake. Some take more specific set ups but imo, none so far have seemed really hard for me. I was worried about GTPs for years which put me off from buying one even though i always wanted one. Well the stars lined up and i say screw it and bit the bullet. Turned out Pat is very easy to care for once i got the set up right. You just need to research and nothing is really hard. People also say Surinames are hard to care for. I dont find that true either. Gina is just as easy as my BCIs to care for as long as you research and know what to do. That is the key. Maybe i got lucky or maybe all my research beforehand paid off![]()