How we can manage or maintain the voltages at our outlets and save our appliance from burning out. Lets have a look at these few points which are explaining the solutions to handle these problems.
1. To tackle the situation of overloading of outlets, use the least number of cords at Outlet instead of using too many at a single time. Further, to prevent a surplus of heat do not put the power cords onto your beds or rugs.
2. You can also fix your problem of low voltages by tightening the screws. First, you need to open the plate and then put it down at the ground. Now, check all the wires and screws attached to them, one by one tighten these screws because in some cases it might help fix the issue of low voltage at an outlet.
3. Thus, to avoid these issues of lower voltage, you can increase your voltage by using this trick. You can increase the voltage by connecting primary towards the input and secondary in the form of series.
We hope these will help you in solving your issues regarding low voltages. Follow these points and solve your problems.

https://www.hunker.com/12499848/how-to-fix-low-voltage-at-an-outlet#:~:text=Once%20you%20discover%20a%20low,copper%20and%20clean%20the%20connections.