Improve Email Deliverability

Can you improve our email deliverability? Too many emails go into the spam box.

Right now we have Cloudfare setup and our host is hostmonster.com

Here is the report for the domain:

No SPF Record found
No DMARC Record found
No DMARC Record found
Blacklisted by UCEPROTECTL3
Blacklisted by UCEPROTECTL3
DMARC Quarantine/Reject policy not enabled
SOA Serial Number Format is Invalid
SOA Expire Value out of recommended range
5.383 seconds - Warning on Connection time
11.267 seconds - Not good! on Transaction Time
5.376 seconds - Warning on Connection time
11.259 seconds - Not good! on Transaction Time