The next Lemmy version will add a donation dialog, which is shown once a year to every user, in order to increase the amount of donations for Lemmy development. You can see the current text in the screenshot above and in the translations repo. You can also checkout the frontend PR. Is there anything you would change about the text?
From my POV not only „free of adds and tracking“ are important to underline. Also „free of political and commercial pressure“ is key, from my POV this is the most important, especially in the current political climate. I know this is not directly a reason why donations are needed, like the others are. But for someone to decide about a donation this is a very important reason to throw money in.
It seems difficult to explain these in such a short text. However I will make a similar post soon to improve the donation page on join-lemmy.org, maybe it could be included there as it has more space available.