unfortunately I got this bad topology, is it possible to fix it? 
Hi SSirKote ,
I don't know if the Topology is bad, but the Mesh looks indeed a bit messed up. The best thing you can do, is to start over with this part. (Yes, I am serious!)
And in order to try and get some confusion out of the way; These two Meshes are not the same (obviously), but they do have the same Topology:
Moving Vertices around doesn't change the Topology of a Mesh, but changing how the are connected, does.
I'm guessing you mean these parts:
As Martin says the rest looks fine to me. When it comes to that pinching bits, you could delete those faces and start that part over again, figure out how your topology can flow and having the support loops you need. It's a bit tricky to explain via text, but try experimenting the best you can. Post the results again when you're done.
Just jumping in to say that if those edges are being controlled by a Bevel modifier, you may also want to consider providing that edge loop some space from the surrounding geometry as well, those intersection issues to me look like they could be a result of a Bevel modifier that simply doesn't have enough space to bevel outwards. 🤔