Hmm, I’m currently using a me TLD and I don't think I’m having trouble. But I’m on a good host and all my dmarc etc is set right. Give yourself a check with https://www.learndmarc.com/
As an extra bit of authenticity I've been smime signing my sent mail. Not encrypting, just signed. I figure that something no spamer is going to do and I’m hoping any spam filter will look at and pass it. Assuming they don't ignore it and make it a waste of time.