You are running out of disk space which Genshin Impact needs to run. To make more space you would have to remove some programs.
- Go to windows add/remove programs ( press windows button and serach for add remove programs to access it). Sort the programs by size and see any large size program that you don’t need anymore, remove it.
- Use a utility like windirstat to scan your disk and look for very large size files, delete if you are sure its a file that you downloaded and don’t use anymore
- Check your download folder for any installation files or other things that you downloaded and don’t use any more.
For deeper cleaning – google “how to clean disk space”.