While I sympathize I would say that if you're emailing from a new domain and have not done your SPF, DKIM and DMARC records correctly (or at all) it's understandable that your emails are getting blocked, and it's probably not just by Gmail.

You wouldn't buy from an ecommerce site that doesn't have SSL and HTTPS, in fact your browser may try to slow you down if you even attempt this. Likewise emailing people for business reasons now requires doing the bare minimum of work to inform the various email providers that your messages are legitimate, and at the scale that Gmail operates filtering messages based on crude but generally good rules seems like a good idea for the benefit of their users.

Setting up your email properly is a couple hours worth of work at most by the way, look up sites like MX Tool Box or search for the topic of "email deliverability" and you'll find tutorials tailored to nearly any email provider you may be using.

Good luck