@ManasaPanigrahi-7596,
Thanks for posting the question on Microsoft Q&A! For a specialized assistance on VS, you may post your question on Developer Community -https://developercommunity.visualstudio.com/search?space=8 - to receive insights from the targetted audience.
I understand you have tried all the Installation guide and installation troubleshooting, you may want to see the doc below for fixing Visual Studio Installer directory to fix upgrade problems or clean-up of installation files and then re-installing.
Troubleshoot Visual Studio installation and upgrade issues
Also, please review the System Requirement - Visual Studio 2019 System Requirements
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