If you are an Enterprise customer, you can indeed request an earlier version installer from our technical support
Simply, update the dependencies to the desired version for uipath.system activities library. this trick will update the studio to the old version
Latest version(Version 19.7.0) of uipath community edition is not good to use which is very worst to use.
How to update the dependencies? Could you please share screen shots? Step by step.
you can go in a project JSON file and u can change it or