The most common reasons for blank pages to appear on WordPress sites are
1.Corrupted core files can cause WordPress white screen death
2.Theme or plugin issues causing a website blank page, You test with Replace your website Theme/ Disable all plugins
3.A WordPress blank page that results in exceeding your hosting server's memory limits
Try using WordPress debugging (WP_DEBUG) to resolve the problem
If you need help finding them https://wordpress.org/support/article/debugging-in-wordpress/
Change the PHP version and try to fix a blank page problem.