The reverse lights don't work anymore. NSS?
The front left directional stays on when the it's turned on(No flashing)
The rear left directional doesn't work at all.
I've tried new bulbs for all of them

 

Probe the socket terminals with a meter, the sockets may be trashed.

 

Reverse lights: could be the plug or switch on the transmission

turn signals: could be both the flasher relay (why they dont flash) and bulbs (why they don't light up)

 

Most likely two separate issues (unless there is a grounding problem so start by freshening your engine grounds)

1. Reverse lights issues often traced to the neutral safety switch. They can often be "refurbished" and returned to full function. Here is how:
http://go.jeep-xj.info/HowtoNSSrebuild.htm

2. The problem with your blinkers both front and rear is almost assuredly 1 problem that is affecting that entire side. A socket issue, flasher (probably not but should rule it out) or some sort of wiring issue or grounding issue on that circuit.