Please always name your OS and its version number/code name, we need it for supporting on point instead of vague answers since we don’t know for which system the answer is needed.
Also always name the version number of Krita and from where you have got your version of Krita. Was it from PortableApps.com, Steam, or the stores of Microsoft, Epic, Apple, or is it from Flatpak, snap!, the repository of your distro, AppImage, and in case of Windows is it the EXE installer version or a portable version?
You can try to follow one of the many hints already given on this topic as a search through the forum with help of its search facility (the magnifying glass symbol in the upper right corner) certainly has also revealed to you. But okay, you can try it with this one:
Or this topic from today:
The problem is that at least some users were unable to solve this issue with the given hints.