Levels opacity not work in .gif

Hi all, a little question, in .GIF version, it does not export opacities lower than 100%. How can I do it? (in .PNG it works)

The .gif format itself doesn’t support semi-transparency. Depends on where you wanna use it but I recommend you export it as .apng but note that not all programs suport it

How do I export an animation for other people to see?

Sorry for late reply but you can export it as a .webp, it supports the same stuff that .apng does