You should also check out Anvil (https://anvil.works). It's even more like VB than Bubble is: you build the UI with drag-and-drop, then write your code in a Python IDE. (Everything is Python, client-side as well as server - no HTML or JS required.)

This probably makes it less accessible for non-programmers than Bubble, but it does make it more powerful in the hands of someone who can code, and makes it useful for bigger/more complex projects.