Staking don't give you high return, they might offer 100%+ in the beginning, but they will lower the reward day by day.

Lending could grow a lot money if you can force the borrowers to pay with high interest rates.

If you're looking to make a lot money, you're better off gambling in shitcoins. If at least one coin you bought can rose more than 100,000x, you're already making a lot money.