itch.io

If you're still looking for someone, I saw three other posts who might fit the bill?

https://itch.io/t/740856/unity-programmer-beginner-developer-with-some-free-time-looking-for-a-project

https://itch.io/t/737329/unity-programmer-beginner-developer-with-some-free-time-looking-for-a-project

https://itch.io/t/735895/unity-programmer-beginner-italian-developer-looking-for-a-project