Wagos are awesome for things like lighting ballasts. Buy I still prefer wirenuts for anything that has a higher loads or might get hot. If it could get really hot then I use the black Bakelite ones for higher temperatures.

The way I have found studs in my place is taping a piece of a fridge magnet onto some dental floss.

Then I gently move it over the wall. Eventually it will pass over a hidden screw and kind of hang up for a bit. Then I am sure that the stud is there.

There is an app called AllTrails that I use, it shows local hikes in BC. It is a good resource on different levels and you can use it to track your progress. Very useful.