It's very buggy. I know you didn't get to finish it, but there isn't a goal in the game (or it isn't obvious), which I think is one of the more important things for a game if you want to players to continue playing for a longer time. I think using Roblox is fine, though you probably would have less players playing your game. 

Also, it ain't cozy. The game clearly took inspiration from Doors, which isn't the exactly the most coziest game out there.

It's sad you got no ratings
Most people probably didn't play this because they don't have roblox and don't want to go through the process of making an account and installing the client
Don't feel bad abut the quality of the game, i haven't played it either so i can't say anything, but it's not the reason no one played your game, it's simply because you made it too inconvenient to play