Yes!!! There are so many of us who are experiencing the same. We have been borderline begging Shopify for the 3 page checkout back, and no luck yet.
Please check out this thread, and post your experience there as well!
Re: Petition to Return to 3 Page Checkout - Abysmal 1 Page Checkout Conversion Rate
https://community.shopify.com/c/shopify-discussions/petition-to-return-to-3-page-checkout-abysmal-1-page-checkout/m-p/2280168#M394556