Why is QuickBooks not installed on my computer?

https://quickbookhelpdesk.com/blog/quickbooks-installation-error-troubleshooting/

QuickBooks installation errors are usually caused by damaged installation files, software conflicts, operating system compatibility issues, insufficient storage, or incomplete previous installations. Fortunately, most installation problems can be resolved with simple troubleshooting. Restarting the computer, checking available storage, verifying the installation files, updating the operating system, removing previous installation files, and restarting the installation process can solve many setup issues.