Can't download TV shows (Downton Abbey) purchased on iTunes (on my old computer) ON MY NEW COMPUTER!

I posted part of this question in May but did not clarify that when I purchased the Downton Abbey TV shows I was using my old MBP with the older OS AND an email address/appleID I no longer have! Now I have a MBP 14" 2021 running Monterey 12.6.7 WITH A NEW email/APPLE ID.

So my question is "what do I do to enable me to download all the TV shows I purchased when I had the old computer and email?

thanks

susan