Google Apps Scripts projects could be standalone, bounded to Google apps (Docs, Sheets), Web Apps or Google Sites gadgets. How could I find all the projects owned by me from
There is not good way to find all script OWNED by you because as you pointed out searching drive will only return standalone scripts. You can find all scripts Authorized by you though and revoke permissions on them.
Under Drive settings: Manage Apps.
or
Also under you google Account Settings->Account permissions https://security.google.com/settings/security/permissions?pli=1