Hopefully when the upgrade the responsive system later this year you’ll come back. Although Bubble does have its quirks, it blows every other web builder out of the water in terms of total product potential. Bubbles TPP far outweighs web flow. Responsiveness is next in line and will probably make bubble even way more cool than it already is
I also like to design for mobile first now. I like to plan on the user having a smaller screen and then make it larger. Generally speaking I said all pages to 375 pixels wide before starting. Another idea might be to have a desktop version and a mobile version.