(SodiumException): This is not implemented

Exception #0 (SodiumException): This is not implemented, as it is not possible to implement Argon2i with acceptable performance in pure-PHP

do php-m
sodium is installed

this has me totally lost why it's not working

did you checked the domain error log for mor detailed info?
http://wiki.centos-webpanel.com/service-log-paths

nothing poped out that can be causing the error

[Tue Feb 16 02:30:34.599103 2021] [proxy_fcgi:error] [pid 15183:tid 140239792199424] (70007)The timeout specified has expired: [client 114.119.150.239:54450] AH01075: Error dispatching request to : (polling)
[Tue Feb 16 02:35:14.443282 2021] [proxy_fcgi:error] [pid 15182:tid 140239733450496] [client 114.119.153.122:55104] AH01071: Got error 'PHP message: PHP Warning:  require(/home/bsrtools/public_html/vendor/composer/../symfony/polyfill-php72/bootstrap.php): failed to open stream: No such file or directory in /home/bsrtools/public_html/vendor/composer/autoload_real.php on line 73PHP message: PHP Fatal error:  require(): Failed opening required '/home/bsrtools/public_html/vendor/composer/../symfony/polyfill-php72/bootstrap.php' (include_path='/home/bsrtools/public_html/vendor/magento/zendframework1/library:.:') in /home/bsrtools/public_html/vendor/composer/autoload_real.php on line 73'

Hi,
The reason for your issue is using the wrong PHP version.
Argon2i is supported from php7.4
Rebuild your php, for example, with PHP-FPM 7.4.14 and with sodium option, then reload your PHP-FPM version. Dont forget to change php version for your Magento 2 directory .
Regards