PHP 7.4.26 includes the extensions :
pdo_firebird
pdo_mysql
pdo_oci
pdo_odbc
pdo_pgsql
pdo_sqlite
To see it and enable or disable them, just Left-Click -> PHP -> Extensions.
You say that this is not the correct driver, but we should know what you mean by "correct driver file". We are not psychic and we don't have a magic wand.
Some pdo extensions require, in addition to their activation in PHP, to install additional libraries, that's why I had put a link on the PHP documentation on this subject, link that I put back here:
PDO Drivers <- This is a link
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Documentation Apache -
Documentation PHP -
Documentation MySQL -
Wampserver install files & addons