Updating Apps with Inactive Apple ID Issue

I previously used a different Apple ID to download several apps on my phone, but I had to switch to a new Apple ID after moving countries to access country-specific apps. Now, I'm unable to update the apps downloaded with my old Apple ID because it asks for a password I no longer remember. Additionally, I can't reset the password as the old account seems to be inactive, possibly due to prolonged disuse. What steps can I take to update these essential apps that are tied to my inactive Apple ID?