If it’s your first trip to Goa you might find the idea of a prearrange package more comforting. Better still it is often possible to get late deals are bargain prices - not much more than the cost of flights. Don’t opt for more expensive accommodation - just take the cheapest. When you get their you can dump the deal and change hotel - if you want to - it’s not going to cost you a lot.
One more tip - avoid taking the airport transfer - it’s cheaper and quicker to get a taxi.
Here’s a few package holiday companies you can try.