This may be a difficult balance to achieve. When many people think of FWB, they tend to see it as a benefit of increasing existing friendships. Of course, it's possible. If two friends are always attracted to each other, it's even harder to do so. You try to add a new energy to your friendship, where landing can be difficult. Without a major emotional adjustment, it's hard to overcome months or years of "this person is not my sexual choice." That's why it's often easier to find a FWB by building a relationship from the beginning, rather than trying to build it later. Starting the relationship with mutually agreed expectations means that it is unlikely to erupt into a chaotic, ubiquitous drama cloud.
The problem is that other people act like jerks, making it more difficult. As one of my female readers has observed - advertising that you're looking for an FWB is like buying two tickets for a shit show. There's nothing like a nsa finder who wants to have sex to bore a woman who wants to. Many women, in particular, are legally interested in NSA relationships; FWB settings are generally safer and more satisfying than talking to strangers. However, many men often forget that "F" in "FWB" means "friend", not "you don't have to call him afterwards". This effectively poisoned the well. Women are less likely to ask for more casual arrangements in advertisements, and more likely to look at men looking for arrangements in advertisements. Now, it has been said that online dating sites like xpal may be your best choice.
It's a space where people clearly look for all kinds of adult friend finders. You're more likely to find someone who wants to have a friendship (plus orgasm) that's as easy to get along with as you are, than a cold approach. But just as those who are open to fwbs are hesitant, you need to be choosy. You want someone who is happy in life, just like you. They may not be casual, but they don't want to date. They need a friend, and occasionally a person to snuggle up with, and they don't expect more of them than they provide. They may be picky. That's why, if you want a FWB instead of a traditional relationship, you need to be patient and willing to handle it at the speed of your potential partner. Some people doubt people who just want to be friends with welfare. Some people don't want that relationship at all. Some people may not quite understand what it means