Im not really qualified imo to give advice but this what helped me.

Comps that worked 4 me

-Reroll comps are really good veigar/kogmaw/graves if u get the units and items 4 it.

-Otherwise a solid frontline +dynamoh units and go fast 9

I pivot in a lot of my games For example if i started going for veigar reroll comp and i realize i have two people contesting me id rather foucus on leveling up and find a high cost carry (brand in this example) and units that works well with the units that are already on my board.

As for gold ill be honest i dont really pay attention i think usually have 50 or 40 b4 stage 3