try mixing that pot with half perlite/ half existing soil.

Can, please explain your reasoning for what you have done.

water doesn't drain as much as needed.

soil becomes saturated. too much water retention.

in fact, i tried to mix this with perlite 50/50 but it didn't work.

maybe more perlite was needed.

Why did you think that putting sticks into the soil would help to improve drainage.

I don't know :)

I think i am so bad at growing in a pot :)

I had read in some forum that water would flow through the soil with the help of the plant roots because they are making a road to the bottom of the pot. something like that.