A brush I made to resemble a g pen from medibang as much as possible.
I set the brush to no Anti-aliasing and "ooze" value to 5 as a default.
"Ooze" settings:
Thickness set to 100% and gap value lowered (around 2) for ooze set to 1:
Thickness set to 50% and gap value increased (to default value) for ooze set to 5:
Change thickness and gap value as needed.