All workmail emails go into spam for all prividers

Lately (actually, for quite a while), all AWS Workmail emails from my domain 12chairs.com go into Spam on all folders, including while sending to the addresses on the same domain. Yahoo, my work email (Broadcom), all goes into spam. I spent a lot of time requesting a certificate and creating a CloudFront distribution (E2S06H8QWX3ZIB) according to an article I found, but no luck. Let alone the fact that it is unreasonably expensive for a personal email and just a few people, the fact that new Windows Outlook does not find these email addresses at all, that there is no automatic spam filtering (I have to block whole domains), it also does not work as it ends up in Spam folders. Is there a remedy, considering that I followed the article and created the distribution? Thank you in advance for your help! (I was just prompted with similar question, which had no answer what-so-ever). Expectations are low, but still hoping for help after all the work I put into keeping Workmail.