We can't get our heads around the reason why those lawn seeds don't grow particularly on that area (whereas we succeeded to grow them elsewhere)
It seems the soil might be too sandy and have insufficient nutrition?
We followed these steps below:
1) Rake the soil
2) Sowing
3) Watering
Its been two weeks with sunlight and constant watering.
Now we are thinking if we should get some fertilizer for those poor soil. Any Bunnings product recommendations for sandy soil?
(Or we should replace those soil with new one....? Time- consuming)
We're just beginners in gardening.
Thanks so much for any advice in advance..!

We just water them again.
