i have these vertices across from each and i wanna connect many faces instead of just one big face (cause that makes it look weird).
You also have the Grid Fill tool, especially for closed shapes, and as long as you have an equal number of vertices on opposite sides. In my example I've given 4 vertices on the top and bottom edges but there could be 2 as well.
- Select the whole shape
- Press ctrl F > Grid Fill
- Your shape is filled with a grid. You can play with the parameters on the bottom of the T panel (on the left) if it doesn't work straightaway.