right click the file press “open with” then find roblox studio in the list, if you cant do that then go to windows search bar, search roblox studio, then press go to folder location or source whatever its called then press same thing again on the roblox studio file that appears, then copy the path for the roblox studio app (top part of windows explorer) then go back to right click file then open with and then scroll to the bottom and press custom app for this pc or something like that then paste the path in top bar and open with roblox studio maybe that will fix it
It’s been changed slightly.
In the Model Tab go to the Model tool shown above (3 coloured squares with white arrow) and it’ll pop up with your computer’s File Explorer.
Navigate to the location the model is saved on your computer and select it to add it to the workspace.
I figured out the problem; The rbxm file I was trying to insert was invalid.
however, your method did come in handy with testing that, I made my own rbxm file and was able to insert that one with your method which was how i figured out the other file was just not gonna work.