Unfortunately, there is no such thing as free coins at all, and there are no sites or apps that pay free coins to users
You can get "free" coins without doing any task, but those coins may not have a monetary value.
If I create an ERC20 token for fun, not backed by anything tangible, the coins will have a value of 0 and will always.
I could send you some. They are free but have a value of 0.
I guess, what you say is that no one will give you "money" for free.... well, internet is the same as real life, you gotta work for your bread and butter.
You could always try to "beg" for free stuff, but even begging is a "task" so they don't become free.