Hi @glamcode01,
Are you seeing any error messages when the page crashes?
If you are not seeing any error messages, search for the constants WP_DEBUG and WP_DEBUG_LOG in your wp-config file and set it to true:
define ('WP_DEBUG’,true);
define ('WP_DEBUG_LOG’,true);
Once you do this, WordPress will generate a debug.log file under {your website}\wp-content\debug.log where you will be able to see the error details, if any. Please share the error details here.
Before proceeding any further, make a backup of your database, and ensure you have a backup of every plugin which is installed on your website.
The next step would be to switch to a default WordPress theme like Twenty Twenty-One and to deactivate all of your plugins. If you are unable to deactivate them using the admin screen, you can rename the “plugins” folder located at https://www.yourwebsite.com/wp-content/plugins. This will also deactivate the plugins.
If you have changed the name of the plugins folder in order to deactivate all plugins, rename the folder back to “plugins”. Now, activate and update the plugins one by one to find the one causing the crash.
If you are able to reactivate all plugins without causing any errors, then the problem was caused by your theme.
I hope this helps!