Your Valorant failing to launch due to multiple reasons. Firstly try to restart the game which will help you eliminate any glitch is occurring while you launching the game.
How do I reinstall VALORANT?
To reinstall Valorant I am giving you brief steps & if you want a detailed solution you can follow solution 11 for that.
1. Press Window key + R
2. Type "control /name Microsoft.ProgramsAndFeatures"
3. Now Find two software" Valorant" and "Riot Vanguard"
Restarting the game will eliminate any temporary error which is occurring due to the old cookies and cache or the system's other software is clashing with your gaming software.
Solution 2
Switch to a More Reliable VPN
If you are using a VPN extension in your web browser then it's an issue. You have to disable all VPNs and prefer the desktop version VPNs
which are reliable to use. And these premium VPNs are available on all devices.
Free VPN did not allow you to stream at full speed they set a limit to the free version which is not a very useful speed for working
For your convince, I am listing down some most reliable VPNs with Best Discounted Links for THE CPU GUIDE reader