turn signals / defrost / hardarzd lights issue

There was a recall on your Ignition switch.
If it hasnt been done before, and they CAN still do it, that would be free.
I dont think thats it.
First, of course, check the fuses.
second, the defrost and hazard are on the same switch, a loose wire there could do it.
The turn signals, could be as easy as a relay going bad.
Both when warm, start working better. Have heard of that before many times.
Without going over the wireing diagrams, i cant say for sure if there is anything wire wise, that they woulld have in common.

Try checking the ignition switch. The plastic part becomes loose where it attaches to the metal switch and causes the blinkers, hazard lights, and defroster to not work.