Go and buy yourself a cock sized dildo up to 7-9 inches, get some good lube and slowly work on your hole every day so it feels more natural to have something inside you, only go deeper once the you have accomplished work on the 1-2 anal muscles at the start of your entrance.
You don't need to douche if you playing at home accept the fact you playing with you ass your going to see waste.
Only douche when you want to meet guys or you go deeper into the anus from 5" onwards. Being a bottom is hard work but you enjoy the amazing sensations it brings.