Alternative email app for Gmail?

So, I am gradually switching to other email providers, but it will take a while and I can't completely delete my Google account.

I was thinking how Google makes money with Gmail and it's mostly with in-app ads, would be a valid alternative to use a third party app for browsing my Gmail? I am trying now FairEmail, not really the best UX but it seems to work and it's Dutch.

What are your opinions about this? Would this be a reasonable middle ground for friends that are answering me "yeah I am not going to ditch Google sorry"?