I want to maybe do anal in the future. I want to go slow and start with fingers first . Is lotion okay to use as like a lubricant to help?

Also i like when my boyfriend is incharge when we do things. He has a Daddy kink but latelty ive been horny and all i can think about is wanting him and how i want him to push me up the against the wall and do things to me , how i want him to spank me and and bend me over and do things to me. Hes not very dominant and he works alot so theres not much time to see eachother and i wanna talk to him about it but idk how to bring it up, any tips or advice ?