converting mesh body to Brep in fusion 360

I was trying to edit some projects from STLs but keep getting errors on most of files that the project have too many faces.Is there a way around it? Even in a different software?

If the problem (common) with F360 is too many faces, load the STL into Meshmixer and remesh the model to a lower percentage. You'll probably not lose too much detail and will be able to load it into Fusion 360. Other programs will reduce mesh, but Meshmixer is the one with which I am most familiar for this action.

Thanks did help me alot