anyone can help me with this idea i have a budget like 4000usd i want to invest it in trading crypto but in daily basis so i can earn as little as 0.1% from intial investment per day but with very little risk
Try triangular arbitrage trading. Find a specific coin on different pair that has a price spread more than 1%. Buy the coin in the cheapest pair then sell it on the high price pair. Do it few times within a day until you get your target profit. Make sure to do the process quickly and choose carefully the coin that has a huge price spread.
Much better if you can master it through watching different tutorials about it. Trading on a random will not guarantee you a sure profit per day. Only arbitrage trading can give you a fixed profit but you will need to be patient on choosing coins for this method.