You can earn money from proper donations, income that you do not have to declare to the tax office. Money from donations for a specific cause, which is worth more than 10,000 EUR, must have a purpose, a cause, there must be supporting documents.
Money under 10,000 EUR via PayPal, no justification is required. You can earn money from PayPal donations through sites like Pixabay. There you put images, whether they are vector images, whether they are photographs, whether they are of mountains, trees, buildings, people, objects, or whatever.
Those who use photos can donate, only if they want, an amount, smaller or larger. They can donate 1 EUR, 2 EUR, 5 EUR, or whatever they think you deserve. Only if they think you deserve it. They are not obliged to donate, those who use your photos or images, because that is the policy of the site.
So if you want to make money from images, photos, videos even, you can use sites like Pixabay or Unsplash, and users of your images can donate, they can donate money to you.
To be able to win this way, however, you need patience. You can’t just play Pinata with people. They must feel that they are doing a good thing when they donate to you.