I tried pressing the windows button and R but it doesn't seem to work also.

Tried restarting my computer also

 
17:43:55.059
Preparing to launch minecraft client for 1.16.4
17:43:55.063
Prepared asset index
17:43:55.128
Have 2641 total files to check or download
17:43:55.135
Waiting for 2641 futures
17:43:55.912
Checking installations.
17:43:55.914
Minecraft client 1.16.4 is ready to start.
17:43:55.914
Starting!
17:43:55.914
Nothing to download!
17:43:55.914
Extracting 8 files!
17:43:56.744
Using default game log configuration client-1.12.xml (outputs XML)
17:43:56.745
Installing versions!
17:44:59.074
Process crashed with exit code -805306369