I'm getting error on every asset I try to trust "Asset trust modification failed, probably this asset is already trusted or you have asset amount above zero"
I have not already trusted them.
You need some xlm's in your wallet, with every asset you trust 0.5 xlm gets reserved from your wallet.
Yes lumens are needed every time you trust an assets make sure to have at-least 1 xlm cause half of it will be on reserve. you can always buy more at an exchange.