Selling side porjects

My friend and I have worked on our side project which is a online emotional support service for 2 years and spent thousands of dollars on it. It's been through few beta testing and officially launched on Product Hunt. Now we are at the step where we either raise money to market or transfer it to an interested buyer. We chose the former due to our full-time jobs and visa issue. I've tried transferslot.com or few other sites for selling side projects mentioned on HN but to no avail. Most of those sites aren't active. Any pointers?