Just go and get one wire and replace it to cylinder #1 on the front driver's side.
If that fixes it, you can buy a new wire set later.
Maybe get a spark plug too.

If then with the new wire the problem returns, could be the coil pack.

or it could be a cylinder head gasket letting coolant into cylinder #1.

That is how my 2001 was when I bought it.
Cylinder #1 misfire and it turned out to be a bad head gasket.