Yes theres an airdrop of bitcoin here? But I did mentioned some raffles.
Unfortunately, the days of Bitcoin airdrops or faucets, which were really worth it back in the day, are long gone. Faucets, which were quite widespread back then, either no longer exist or pay out a fraction of a cent in Bitcoin. It takes a lot of time and effort to collect enough to get paid out even just 1$ in Bitcoin.
However, Raffles do exist from time to time and sometimes pay out larger amounts in Bitcoin. At the moment I don't know of any Raffle where you can still participate.
The best way for me to get Bitcoin is still to accept smaller jobs and orders that pay in Bitcoin. Besides advertising via signature and avatar campaigns, these can also be jobs in the marketing sector or in software development.