Want to create pixel art? For games or other needs? Need a free and open-source tool? Pixelorama might be the right choice for you
https://orama-interactive.itch.io/pixelorama
Available in Windows, Linux, Mac and Web versions. Are you trying?
It's on GitHub too
https://github.com/Orama-Interactive/Pixelorama
If you are using Linux, there are Flatpak and Snap versions available. You can also get the package from the Releases area on GitHub