When I tried to open the Minecraft Launcher today it reported that it was downloading files for an update and then the launcher crashed. 

If I delete the .minecraft directory then I am able to launch the Minecraft Launcher but cannot re-install Minecraft because I get an error that the download speed is too low. I performed a speedtest and at the time my internet had a download speed of 54 Mbps, which should be more than sufficient.

When the Launcher does open, it has a message:
"A new Launcher update is ready. Restart the Launcher to use the latest version."

However, when I restart the launcher, it returns to downloading files and crashing. 

If I check my "Settings" in the Minecraft Launcher:
 

Launcher

Windows 10.0 2.3.645

Tuesday, March 7, 2023, 8:39:06 PM

38005228e2225f439ce96f45166799c6f11d2841

Bootstrap

1.1.90

Tuesday, March 7, 2023, 10:42:01 PM

978ce40a3c6168c107ca83ecaca0833223ccb3d0

UI

2.3.645

Tuesday, March 7, 2023, 8:29:53 PM

38005228e2225f439ce96f45166799c6f11d2841

Is there some way that I can re-install the Minecraft Launcher or force the update? 
The updateLog file in .minecraft says that the update was successful but there is clearly something not working.