My answer will focus on the use of the Macro lens alone.
My experience with such is this lens by Moment:
Note that the frosty filter is detachable in this particular lens. However, I'd recommend its use as the absolute hardest thing to nail with a macro lens is the focus - especially where you are handholding a phone. The size of this particular device is matched perfectly to the optical focal plane: setting a penny down on a table and then laying the camera down so that the filter is also flat on the table will yield an image with perfect focus on the penny.
Now, not all macro attachment lenses come with such a device, so my advice in those cases is: make one.
A filter like the Moment has a dual function - allowing you to shine a bright light into it to light your macro object and to have that light diffused on the way in. This is in addition to serving as a quick reference of where the focal plane is.
I haven't personally found the diffusion aspect of it to be very useful - but having the physical reference for how far away to position the camera for shooting flowers, bees, and other insects means getting a clean shot right away as opposed to moving in and out, tapping the screen to refocus, and maybe losing my shot.
So, figure out where the sweet spot of your macro lens is and make yourself a quick distance finder so that you can more easily get macro shots quickly.