site down from opsys upgrade

My goofy host changed the opsys on my site from Centos and php 7.3 to AlmaLinux8 and php 8.2 and now, I cannot access anything on the site. Every php file that is clicked does not run the php file. Instead it downloads a file that contains
Code:

if (version_compare($phpVersion, '7.0.0', '<')) {

die("PHP 7.0.0 or newer is required. $phpVersion does not meet this requirement. Please ask your host to upgrade PHP."); }

Their admins are saying it's an addon that's not compatable with php8 -...

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