If you aren’t looking for an emotional connection, then luckily you don’t need to worry about dating.
You seem like a relatively intelligent person, think about how you would like to be approached by a potential ‘friend with benefit’ and the steps you think are needed to approach yourself.
The concept might be a bit abstract, but it might give you an idea on how approach someone like-minded.
If you want, try dating websites. Make it known that you are not looking for anything serious, and try to make some friends. They are on a dating website for a reason, and perhaps you will meet those of the same mind.
I met a good friend, and if I was single, a friend with benefits, on a dating app. You might have the same luck.