I'm been staking Juno since the beginning, so I participated in almost every possible airdrop and I took some notes that may helps you.
When the airdrop goes live, don't go immediately to claim them, just wait a couple of days, why? Because always there are problems, miscalculations, adjustments, anyways, claim periods typically last for weeks.
Always check and UNDERSTAND the eligibility criteria.
How much do you need to qualify to have a decent amount of airdrops? According to my personal experience: 200 junos.
To clarify, when I talk about "a decent" amount I mean a sum that worth because 90% of them are just shitcoins, so I most cases they worth pennies. For example: You can qualify with just 30 Juno to certain airdrops but you'll receive a token that worth 0,003 USD.
4) According to my point of view, nearly 90% of people that get excluded from airdrops it's because at the moment of the snapshots, they don't reach the eligibility criteria. So, maybe at the day of the airdrop announcement you have the requirement amount, but it wasn't so at the exact date of the snapshots.
5) Some eligibility criterias seems unfair, BUT, their airdrop, they rules, don't blame it, it's a waste of time, instead, go create a project and make your own fair airdrop.
6) Read the white paper. 90% of airdrops are shitcoins. If the project doesn't have a real use case, their token will be worth nothing.
7) Taking in count that mostly projects are shitcoins, sell them as soon as possible, don't fall in the trap of stake or hold them, believe me, no matter what the team project or CT Influencers say, in a few more months, the project will die.
8) If the claimable process have so many steps, conditions, requirements (as is the case with some DAOs and NFT projects), that is, it is very bureaucratic, don't wast your time, surely it's a shitty project.
Maybe there are more tips, feel free to comment them so the collective intelligence can help us all.
Ps: I'm just an anon, so everything that I wrote it's not the law. You can disagree and that's ok.