Earning daily income by trading actually depends on a person's money. You will get profit according to the amount of money you can invest in the trade.
The amount of profits one can earn depends on the capital, and earning depends on the knowledge and experience of the trader and whether they can manage to make successful trades or not. But, unfortunately not an each and every day is a same day which means you may book 50% profits today and may book 40% loss tomorrow. So, calculating profits for a day is absolutely not meaningless in my opinion.
Moreover, an experienced person will never face loss
That's not true. Even experts in the market and technical and fundamental analysis tend to incur losses sometimes, the main thing is to recover those losses which is possible if you can make a few successful trades after a losing trade.
Basically if we want to make daily income by trading first of all it is important to have good knowledge about trading and then having funds is most important.
Yep, both of these are the basic requirements. Have your capital ready first, and then gain the necessary knowledge about how you can use that capital effectively.
Any trading you do is risky, so you have to take risk if you want to earn daily.
No risk, no reward, as they say.