Your crash reports are full of crashing in everything. Can also try fixing any issues in Windows 10 by doing this : 1. Repair System Registry and Files

(FOR DOING Above & Below - WINDOWS All OTHER VERSIONS - Use Search To Find Command Prompt ** Enter CMD.exe to Find COMMAND PROMPT Then Right Click & RUN AS ADMIN)

To run the SFC command use the Windows key + X keyboard shortcut to open the Power User menu and select Command Prompt (Admin). Type "SFC /SCANNOW" (without quotes or copy/paste) and press Enter. For more information on using SFC, please refer to the Microsoft KB: Use the System File Checker tool to repair missing or corrupted system files

Run the Windows Deployment Image Servicing and Management (DISM) and System File Checker (SFC) tools as Administrator. The DISM and SFC tools scan the integrity of the Windows image and all protected system files replaces corrupted, damaged and incorrect versions. (FOR DOING Above & Below - WINDOWS All OTHER VERSIONS - Use Search To Find Command Prompt ** Enter CMD.exe to Find COMMAND PROMPT Then Right Click & RUN AS ADMIN)

Windows 10 To run the DISM command use the Windows key + X keyboard shortcut to open the Power User menu, then select Command Prompt (Admin). Type "DISM /Online /Cleanup-Image /RestoreHealth" (without quotes or copy/paste) and press Enter. While running DISM you may notice the process will appear to pause at 20%. After a few minutes the operation will continue.

Try https://support.mozilla.org/en-US/kb/firefox-keeps-crashing-startup and https://support.mozilla.org/en-US/kb/upgrade-graphics-drivers-use-hardware-acceleration Do know that Microsoft can and will change your Hardware Drivers to Microsoft's which can cause issues, https://www.howtogeek.com/302595/how-to-stop-windows-10-from-automatically-updating-hardware-drivers/

I would suggest getting a Full Version Installer from here https://www.mozilla.org/en-US/firefox/all/ which will install version 56.0.1

Please let us know if this solved your issue or if need further assistance.

If you haven't already, could you test in Firefox's Safe Mode? In its Safe Mode, Firefox temporarily deactivates extensions, hardware acceleration, and some other advanced features to help you assess whether these are causing the problem.

If Firefox is not running: Hold down the Shift key when starting Firefox.

If Firefox is running: You can restart Firefox in Safe Mode using either:

• "3-bar" menu button > "?" button > Restart with Add-ons Disabled
• Help menu > Restart with Add-ons Disabled

and OK the restart.

Both scenarios: A small dialog should appear. Click "Start in Safe Mode" (not Refresh).

Any improvement? (More info: Diagnose Firefox issues using Troubleshoot Mode)

Your crash reports show that you run Avast. The Behavior Shield feature may inject itself into or interrupt Firefox if a threat is perceived, but in theory you would learn this from Avast. https://blog.avast.com/behavior-shield-our-newest-behavioral-analysis-technology Do you see anything in Avast's logs about issues with Firefox? Can you temporarily make an exception for Firefox in Avast's settings for the Behavior Shield?