Avoid my email being categorized as junk?

Hello guys,

I’m really sick and tired of hotmail and yahoo settings of junk/spam

I tried my yahoo account sending mail to hotmail, hotmail categorized it as spam… vice versa

I tried tons of other subject headings, messages n stuff… nothing works

I try to avoid attachments as well… but its still the same…

Any tips on avoiding my email categorized as junk?

Thank you