Cloth simulation

Hello Blender artists,
I am a total noob in character clothes and physics in Blender and I’m trying to have a nice suit with realistic physics on my character.
Can anyone help me I’ve tried everything and the situation is out of my hands,
Here is the project link: https://www97.zippyshare.com/v/1uM2k4zO/file.html (PS: an ad will show up)
I am using Eevee Engine,
Thanks in advance,
Best Regards.