If you are looking for something more consistently progressive or liberal-supported, you might want to give the EFF a try.
If you specifically care about free speech above all, you're probably right libertarian. It's fine. There's no such thing as centrism in real life politics and an individual's political alignments can vary drastically in different issues rather than line up perfectly with any specific political movement. Especially if you consider yourself apolitical or haven't really reflected on the entirety of your political beliefs and how they interact with each other (most people haven't).
https://whyevolutionistrue.com/2022/01/30/the-aclu-reverses-...
What other organisations do you donate to along the same lines?
It just instantly sinks any attempt at seriousness. The website might as well be called Destroying Creationists with Facts and Logic after publishing an article with a headline like that.
Our rights and freedoms do not come without struggle. And they sure do not last without somebody constantly defending them. And itβs only bravado to assume that we can stand against the might of federal agents as individuals without dedicated organizations fighting for us.
Please donate to ACLU - as much as you can.