Gmail – How to filter only emails without aliases

I have been using Gmail for a while and created a bunch of aliases for different mailing lists and websites, with "name.firstname+website@gmail.com"

I am currently switching to another email provider for my personal email and keeping Gmail for mailing lists. Since several of my contacts still have my Gmail address only and might still send me messages, I would like to transfer the emails sent to "name.firstname@gmail.com" (without the alias) to my new account.

I created the following filter in Gmail:

to:name.firstname@gmail.com
forward it 

But this filter still takes into account the messages sent to name.firstname+website@gmail.com

I also tried with "deliveredto", "hasnouserlabel" but no luck. Is it possible to create such a filter?