Where to invest 7k usdt
To get profit daily 30$
maybe you should try staking, whether it's on eth or another coin, maybe you can earn 30$ per day or more or buy shares to get dividends every month, that's my advice, you should do your own research so you don't experience losses in investing.
What of the risk involved, there's no investment you could manage do with that amount of money that will not involve taking risk, so if you're to to make yourself take lesser risk then try to invest with your money and hold, this is not a salary pay that you invest to earn a particular amount every day, even trader don't have a fix flow amount of income they receives daily, maybe getting a job could serve better.
I guess the best possible investment choice for this amount is outside the altcoins investment class, and to focus on more secured coins like bitcoin because a 7k worth of bitcoin can significantly give you a good profit's both in the short term and long term basis, and if you closely follow up the DCA approach, yoy will arrived at almost rhe best possible positions that the best of altcoin will get you to at the best possible market conditions, but the diffenrece will be that you have more confidence when yoh do that investment in bitcoin.
Because with bitcoin you have more peace of mind and stability of time to strongly hold on to your assets, without fear of any possible dump.