Where to invest 7k usdt
To get profit daily 30$
With that amount allocated for trading $30 profit daily is very easy even in Spot markets just snipe some tokens that has a potential to move upward then sell at high always do the buy low sell high method, you can select coins that has either good news or down for atleast some days and wait for reversal.
But there is no guarantee that from spot trading will generate consistent daily 30$ income, if OP is also accepted losses then can holding some top altcoins and when market will pump then will get good profits but in case of fixed earning, i think stake is the only option but here is also risk to find trusted platform. 7k$ is big amount if now buy BTC and hold 1-2 months i think it can give huge return, because some good news about BTC as like ETF is approved in the few days ago.