F95zone is an excellent place to advertise, but it is a forum and I have seen a lot of NTR/cuckold games authors there get discouraged by negative feedback. So just have a thick skin and don’t mind the immense amount of haters and trolls on that forum if you read the feedback.
I will both post it there and set up a Patreon in the near future. I'm planning a "viable" version that I will be able to promote a bit more easily. One that includes at least an actual fucking scene, and a save system. I think it would be easier to "sell" the game that way. Afterwards, I'll build up from that.
Thankfully, I'm highly motivated, so it may come quite fast. =)