How to get rid of the two vertex? I have established an edge route but have two extra vertex. How to get rid of them? I tried to connect them with the last one but the result is worse. I can't add new loop cut because I need a curve



Here is the next problem
Try pressing X on the 2 vertices that need to be deleted, and try Delete Vertices.
If that doesn't work, press X again, but click on Dissolve Vertices instead.