"How to generate a second income in Bangalore?"

Become an Uber driver. Yes

Advertise as female driver Chauffeuring around drunk girls and women late at night.

Buy me a new car once you become a millionaire.

1. If you have any special skill, you can try creating youtube channel and monetize it. I know its not very easy, but if you have talent and passion you can do. Give it a try you can get some idea.
2. Try freelancing, you can use freelancer and upwork. Make sure don't share your pan otherwise your primary employer can know about this
3. You can do swiggy, Zomato delivery, rapido on weekends.
4. Start investing in equity or mutual funds.

You might get many more ideas online but those are very specific and require special talent.

With less capital/salary generating passive income can be extremely tough. Best bet is investing. The picture sums it up pretty decently. Don’t need to be master trader, just a consistent investor.