It depends on what type of airdrop you are participating in, if in general it is without capital because usually airdrops only do social media tasks, or if on a testnet then you need to prepare coin faucets on various networks. If you want to dive into the world of airdrops again, as far as I know the airdrop system is now different, for example for this year Kaito where you have to be active on Twitter to continue promoting their projects, create quality threads, be active on the discord channel.
There are more and more airdrops with different types and rules and this is certainly a challenge for us as airdrop hunters who must constantly update and improve their skills to do the various tasks given.
Social media tasks seem easier, but the rewards given are also smaller, commensurate with the task.
Some of the testnets that give big rewards usually require the initial user to test all the features on the network and if the Mainnet is launched then it is necessary to do the task of installing LP,
staking and the like and Running the Node with the help of VPS is also a good enough opportunity to get big rewards, but of course with a large enough capital as well.
But in the end, there is also no guarantee whether the project can provide great rewards or not or even the project does not support the community and only wants their own profits, this is quite a problem in the end.
Let me guess that OP seems to be a beginner and started the airdrop because at that time the mini Apps hype. My advice is that you have to be able to improve the quality if you want to be a little more lucky in the airdrop because the more people enter the airdrop, the stricter the filtering process.
Airdrops with mini apps on telegram are very easy to do, but look now there are many projects that are not running and projects that are in mini apps on telegram just want to farm accounts easily, but now the hype is over.
Now Airdrop is completely dominated by Binance Alpha, as the new project provides more allocation for Binance Alpha users than the Airdrop hunters who promoted the project from scratch.
Now Binance Alpha and other types of Alpha are the talk of the town among airdrop developers because they feel they no longer trust the community.