In PHP the default upload_max_filesize is 2 MB but you can increase this filesize limit using your htaccess file. To increase the limit via htaccess , add the following line to your htaccess
php_value upload_max_filesize 100MB
This will increase the default limit to 100MB.
Read more on this article here https://helponnet.com/2021/11/09/php-post-max-filezize-htaccess/