New Game Testing

I can't make a good game no matter how hard I try. The zombies are basically real zombies with how dumb they are. I tried to make them run to the players but they just decide to hug the walls nowhere near the player. As of now, this game is a laggy mess. I strongly believe this game will never get done or even be played by anyone. With roblox doing the age locking things, that makes this completely useless. I do not want to work on this game and if i did, it would just be hours and months of work for absolutely nothing because of how roblox handles new games. I never believe in myself ever and this is the main reason. It's reasonable and there's no way around that. How do I expect myself to make a good game on roblox that has a well amount of players when these colossal unfixable disasters come crashing down on unfortunate peoples places like me. Nothing here on roblox is worth it. There is no point in making stuff with being as small as me. The top games are just slop.