It will take money to make money, there's no easy way to make money now in bounty and airdrops so many of them are scam out of 100 airdrops or giveaways you are lucky if you can get at least 5 good projects, investing, and trading on coins that are already in the market is more profitable than investing your time in airdrops and giveaways.
Indeed, bounties and airdrops are not profitable just like before due to numerous scam projects that are existing.
Investing in a popular coins are much better in order to earn in crypto.
But this require a knowledge on the coin that you'll going to invest to better understand its flow.
Indded, none can guarantee that if bounties and airdrops programs are going to success or not. It's very common in this field, many project turn out into exit scam at the end.
Anyway, Crypto experts suggest about potential coins to make investment in order to grow your hard earned money. From my experience it's much safer than promoting scam project.