Create an Automated Flow:
Step 1 (trigger) - When a new response is submitted
Step 2 - Get response details
Step 3 - Convert HTML to PDF (Encodian)
Step 4 - Send email (+ Add attachment from file created in Step 3)
See below:

Please note Encodian is free for 50 runs a month - any more will require a licence which is far more affordable than using the Microsoft Word (Business) connectors to do the same job.
Lastly - if you don't want the responses as an attachment, but rather to be written in the body of the email, then you won't require any premium connectors and will be a very simple process.
Regards!