Okay so earlier I came across a site that claimed that it's possible to get bitcoins for free by just; playing offline and online games, watching ads and videos, participating in airdrops and so on...
I saw that 1 BTC was allocated as the main prize of the contest, but I do not know how honestly the results are summarized and indeed this bitcoin is transferred to the winner. It is more realistic to get a Bitcoin particle through a faucet, but this is too small a part, which is measured in cents.
If the contest creator is reputable and have proof that they really distribute the prize to the real winner and transparent for everything peoples ask then maybe its worth to try to participate on those contest. But if they are not reputable then maybe they are just doing the same scheme where they just use the efforts if their participants for free to do some task and deceive them by showing a manipulated result. This is a waste of time if this is really the real case so much better to use those realistic platform like what you said the faucet since it can give them much better return.