In my opinion, making gambling as a source of income is not only high risk, but highly discouraged. Because it is very difficult to make a fixed
profit of 3%-5% from gambling, if you can do that I am amazed by you, means that your luck is very good in the world of gambling. There are
still many ways to be able to make money from the internet that is much safer, and has little risk. I highly recommend playing gambling just
for entertainment, then the budget that I prepared for gambling was only extra money from the income I received. Even though I ended up losing
all the capital I had while gambling, it didn't become a burden for me.
Making 3-5% profit from gambling is not that difficult if you are a risk taker. Very simple example to make 3-5% profit: lets say your initial deposit is $10, just do one bet on dice or other games where you can set the payout 1.03x-1.05x or spend 10% of your deposit in one bet by betting 1.3x-1.5x.
The risk is small with such low payout but if you are unlucky you may lose all in single bet. The other problem is, it is hard to control yourself when you win your very first bet because you may want more and more although your main target is 3-5% only.
What you describe may be possible, but getting 3%-5% profit from gambling cannot be obtained in a row. The risk is that we can lose all the money
we have, if we play excessively or we can't control our greed. It's not a new thing experienced by many gamblers, if win we want to get the next win,
and ended up losing all our money. So don't be obsessed with winning when playing gambling, because it will cause us to lose a lot of money.
Just enjoy the gambling games that we do, if we do win, we must stop immediately and withdraw the profits we get.