purchasing a refurbished iPhone

I have a iPhone 6splus, I don’t have a plan, only pay as you go with chatr , in Toronto Canada, I’d love to buy a SE 11, advertising for 599$, but I’m technically disadvantaged! Lol!

according to the info there is a e-sim and a regular one, I m not worried about changing my my phone #, but I can’t lose my photos! I’m also open to an older iPhone can you help?