[MattyMatty]

If your afraid of taking on complicated challenges on your own it might be a good idea to team up with another scripter so you can both work together on the complicated projects, you dont have to do everything yourself,
gather up a team and assign duties that need to be fullfilled.

You could also just start enjoying what you do more...

I dont know what kind of gamemode you want to make,
but gamemodes dont necessarily need a lot of players to be enjoyable,
1 you can make a racing server,
2 an arena dm server,
3 a minigame server,
4 a server with challenging npcs
5 a server where the focus is on creating an enjoyable experiance even if your alone.

If your not very confident that your gamemode could succed
you could also join another server with a similiar gamemode to yours and offer to work for them.

The possibilities are all there, focus on controlling what you can do instead of what you cant do
and things will get a lot easier.