Auto Repair Questions

can someone tell me how to fix my car

I have a 1996 plymouth breeze that don’t start, I have replace the crankshaft sensor and still after doing that won’t start

Hyundai Accent 2003

  engine misfiring on down side of rpm’s and stalls at times

2000 Ford suv

We checked the battery and it still wont start. There is a clicking noise but wont start.