the gameplay isnt appealing enough and its not obvious how to continue through the game
maybe you could encourage the social aspect of the game/showing off by being able to display what triangles you have or have some special effects with them like rng games
for the first few triangles try designing something more interactive and make it obvious how to complete the quest with some kind of arrow that points to where you need to go
you could add gamepasses/products with increased walkspeed or hints