Men's issues are often a bit different than women's issues, and coed is usually not a good safe space to air issues of lust, pornography, anger, past abandonment of families, addictions, etc.
Though the genders share more of these than you might imagine, it's often common to get more condemnation than confrontation and encouragement when you cross the streams. I used to belong to a place called MensForum that did this rather anonymously. You created an account with whatever handle you wanted and then could discuss any issues you were having, request prayer, and find some level of support.
That forum is now defunct, but there are others. The biggest issue with sharing needs and prayer requests of that nature, airing your dirty laundry, is gossip and character assassination, which is not a stranger, unfortunately, to Christian circles.
Hi, I'm pastor Jack Jimmybob Johnson from Jonesboro and I've been cheating on my wife. Can you pray for me to cut off relations with my mistress, reconcile with my wife, and repair damage with my kids?
Hi, I'm deacon Dwight Doubtright from the church down the street from yours, and I've made sure you're an EX pastor, EX husband, and EX member of your EX church.
I expect that a lot of us here on this forum don't deal with sin on that level, but no doubt some of us do. If you are looking for accountability, you're going to need a close friend you can trust IRL. You might have grown one or two of those over the years. Just joining a men's group at your local church is a recipe for disaster. For example, when I was having struggles, I joined one at my church. 20 men in the room at one guy's house. Supposedly all dealing with men's issues. I was desperate for some help and answers. But when we met, nobody would speak. It was like a one hour silent treatment. Nobody wanted to open up. So I did, finally. I think it shocked a lot of the guys there, they thought I was perfect. (I put on a really good front). Even after I did, everyone else was completely afraid to open up. I discovered later that some of them told their wives, who eventually told others, until I got stares at church. My wife knew about my struggles, so when word got back to her, she quietly suggested I find a different and smaller group. I'm sharing just a tad here only because it's now public knowledge - I've put some of these stories in the books I've written.
LOL - But I wonder if it got further when it was just gossip.
A men's forum can be a good place to air issues without risk, a safe space to get advice and prayer. but not really for accountability. Accountability on an anonymous forum is as powerful as a rubberband gun. After all, you can always just kill your account or forward all your notifications to the bit bucket.