Active income is the income which you get in the form of salary or any income as per your skills. Now the thing is Active income will remain with you till the time you can trade your skulls and thus you will be get paid for that.
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Passive income on the other hand is the income which will grow without you working, that means it will grow without your time. Everyone will give you advice to increase passive income so that it can reach to a point where you don't have to work for the money. And that's what the financial independence retire early means. Your passive income will be used to replace your active income and thus you don't have to work for money.
Now the thing is people will usually ask you to increase your passive income as soon as possible. But the problem is increasing passive income from Rs 0 to Rs 10K is very hard for begineer. It will take either a lot of money to be invested or it will take a lot of your time to build that passive income. Now in the same time if I ask you to increase your Active income from Rs X to Rs X + 10K, then it is quite achievable. Just thar you have to improve your skills and thus it will help you to increase that income.
So people who have a low active income should focus on increasing their Active income rather than focusing much on passive income. I know passive income is great but it needs time to create, but if you can increase your Active income which can be used to fund your passive income then it's a great thing right.
People will say that what if they want to increase both the income. You can do it but doing both is hard. To increase your active income you need to improve your skills as well as to increase your passive income you need a lot of time. So doing both requires a lot of time, so if you have a lot of time then you can try to do both. But both of it requires a lot of attention.