Bluehost India — Email hosting

I ported to bluehost India for my emails. Ever Since I am getting SPF and DKIm issues and my emails return back whenever I send email especially to Gmail. THere have been numerous times they have asked me to make changes in the domain.
Every 10-15 days i am asked make the changes . Last time I was asketo make changes in the TXT of the domain, which also I did, however no changes, When i asked for refund, they refused /

THe below is the email for return email
This is the mail system at host soproxy8.mail.unifiedlayer.com.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

The mail system

: host gmail-smtp-in.l.google.com[142.250.27.26] said:
550-5.7.26 This mail is unauthenticated, which poses a security risk to the
550-5.7.26 sender and Gmail users, and has been blocked. The sender must
550-5.7.26 authenticate with at least one of SPF or DKIM. For this message,
550-5.7.26 DKIM checks did not pass and SPF check for
[parekhconsultants.in] 550-5.7.26 did not pass with ip: [66.147.242.204].
The sender should visit 550-5.7.26
https://support.google.com/mail/answer/81126#authentication for 550 5.7.26
instructions on setting up authentication.
g18-20020aa7c[protected]b00518b69d4171si896687edq.480 - gsmtp (in reply to
end of DATA command)
Reporting-MTA: dns; soproxy8.mail.unifiedlayer.com
X-Postfix-Queue-ID: 2A[protected]
X-Postfix-Sender: rfc822; [protected]@parekhconsultants.in
Arrival-Date: Tue, 20 Jun 2023 08:13:21 +0000 (UTC)

Final-Recipient: rfc822; parekh.[protected]@gmail.com
Original-Recipient: rfc822;parekh.[protected]@gmail.com
Action: failed
Status: 5.7.26
Remote-MTA: dns; gmail-smtp-in.l.google.com
Diagnostic-Code: smtp; 550-5.7.26 This mail is unauthenticated, which poses a
security risk to the 550-5.7.26 sender and Gmail users, and has been
blocked. The sender must 550-5.7.26 authenticate with at least one of SPF
or DKIM. For this message, 550-5.7.26 DKIM checks did not pass and SPF
check for [parekhconsultants.in] 550-5.7.26 did not pass with ip:
[66.147.242.204]. The sender should visit 550-5.7.26
https://support.google.com/mail/answer/81126#authentication for 550 5.7.26
instructions on setting up authentication.
g18-20020aa7c[protected]b00518b69d4171si896687edq.480 - gsmtp