Why on my 2000 honda civic ex coupe i try to put a radio station and i just hear static? Please tell me

It has a sound system
I don't know please tell me i just hear static i bought the car used…

It could be the cable, the antenna itself, or the connector. A visual inspection alone won't tell you if it's bad. You need to have it tested. You could ohm it out yourself with a multimeter. If possible, check the outer braided-metal shielding, the center conductor, and that there's no contact between them. It could also be the radio itself starting to go. How old is all the equipment?

Check the ground for the radio, and also the ground off the battery. Make sure they're tight and free of corrosion. Use a multimeter to check the resistance or the antenna need to be replace.

Maybe antenna is not connected.

It has to be the antenna
Mine does the exact same thing. It had an aftermarket sound system that broke down, then i replaced it with another one one. I found out that the newer system had much shorter cables and it doesn't reach the wire that leads to the antenna. I just left it that way it is.