No one here can tell me why...!!!

[bantonat]

No one here can tell me why my emails end up in the spam folder.

 

[kurczaczek]

Just that is probably because your domain / mx server was marked as a source of spam so it pretty much lands on that list.

 

[zoubida123]

Yes, and maybe you're using a shared IP that has bad reputation, not because of you, but because of toher customers from your SMTP provider.

You can chek your reputation on these links :
senderscore.org
talosintelligence.com

there are more, buyt these ones are quite efficient and comprehensive.