An alternative is to donate your time rather than your money, and use it to do the kind of work you would have funded, had this been an option. With most interventions, this isn’t possible or realistic, but Wikipedia is the Free Encyclopedia that Anyone Can Edit.
I used to think the same, but after reading https://en.wikipedia.org/wiki/User:Guy_Macon/Wikipedia_has_Cancer and https://meta.wikimedia.org/wiki/Wikimedia_Foundation_Medium-term_plan_2019/Annual_Plan_2021-2022 I don’t think most (if any) of the money goes to things donors care about.
It would be great if there was a way to fund editing Wikipedia, with a focus on increasing the quality of important articles.
But looking at the comments here https://forum.effectivealtruism.org/posts/FebKgHaAymjiETvXd/wikipedia-editing-is-important-tractable-and-neglected , it sadly seems currently not feasible.
An alternative is to donate your time rather than your money, and use it to do the kind of work you would have funded, had this been an option. With most interventions, this isn’t possible or realistic, but Wikipedia is the Free Encyclopedia that Anyone Can Edit.