I turn the headlight switch on the parking lights work but no headlights

I have a 1995 Buick Skylark with the same exact problem I think. If I turn the headlight
switch on the parking lights work but no headlights. But the passing beams, (pulling the
blinker lever toward steering wheel), still operate. However it is pretty difficult to drive
having to hold the passing beams lever the whole time. The headlights did this about a
year and two months ago, they stopped working for about three weeks then just out of
the blue started working again. However they have always had an issue with the high
beams not coming on when pulling the lever back, the headlights don't operate at all but
then when you pull the switch to go back to low beam they would come back on. I'm
totally baffled by this and would totally apprectiate some helpful advice on what to do to
fix the problem. I'm tempted to rewire the headlights with my own toggle switch but I
don't know if I cut the wires for the headlights if all the lights on the vehicle are wired in
a "series" I'll lose my parking, turn, tail, brake lights. Does anybody have any advice
please