3D modelling is a desktop task. I can see using the iPad in the field and when collaborating and maybe swapping some prebuilt objects but going from blank to completed design is happing on multiple monitors with a mouse and keyboard.
Have you tried onshape? It’s honestly pretty fantastic, and I think it shows that you can have good browser based CAD that can run on non-desktop hardware.
Downside to onshape is its generally a different use case than SketchUp. I use both for work and almost no overlap in their applications for me.