pvc windows constantly wet ...door handles dripping wet inside of premises
Where do you live? Almost sounds like a cold and wet place like Alaska or Canada.

On the draftiness: Sounds like the windows are poor quality or they were installed incorrectly. A good window that's installed right should be airtight. You can caulk around the edges where the window meets the drywall, and that should stop air leaks between the window and the surrounding wall. If air is coming in between the frame and the sliding sash, you can buy and apply stick-on compressible weatherstripping gaskets that will seal when the window is closed. That should help. Even ancient single pane wood windows with zero weatherstripping are often measurably improved by this change.

On the moisture: getting condensation on the interior of your windows is a sign that the windows are poor insulators (R-3/U-0.33 or worse) and you have a lot of interior humidity. Because the windows are poor insulators, they're cold. When moist air hits a cold smooth surface, it condenses and turns into liquid water. To improve this state of affairs without replacing your windows with much more expensive higher quality triple-pane windows that do a much better job of controlling interior condensation, you can run a dehumidifier in winter, or you can install Low-E storm windows outside of the windows, or you can build airtight interior insulating shutters made out of foam board that completely cover the windows at night. But they would have to be airtight, sealed against the windows with gaskets. Otherwise moist air would get right past them and continue to condense on the windows.

Good luck.