These are all indications of burnt out bulbs.
Jim

The first thing I would do is replace the light bulbs. I am confused by the
message that says the left headlight is out, but you didn't say anything
about the status of the left headlight. The turnsignal and the running lamp
(sometimes called corner marker) is the same lamp with two filiments inside.
Normally only one filiment breaks, but there is no reason why both could not
be broken at the same time.

I am rather anal about my lighting so I check my lights often, usually at
least once a day. What I do is when I approach a traffic light that is red,
I stop a suitable distance behind the car in front so that I can see my
lights reflecting on a flat surface of the vehicle ahead. When I pull up
behind a van or pick up truck, then I take special care to stop at a
distance that lets me observe my lights in the reflection. I test my high
beams to make sure they work, look at the head lamps and corner markers and
fog lights if they are on.

When I back out of a parking space where there are windows at ground level,
I will position my car for a second to observe the tail liights, brake
lights, and back up lights. Since I drive almost all of the time with my
lights on, then I will leave them on while getting gas, this lets me check
them, particularly the rear lights while the tank is filling.

I would not even consider "serious electrical problems" for another 15 or 20
years.