Paragraph tags & Line Breaks mess up code

I have a problem with the paragraph tage they keep getting added automatically and they get added to into every single part of my code no matter what, I have had wordpress for 2 years now and have came across this problem several times I want this to be fixed now I also noticed that others have had this problem as well over the past few years but it seems to me in every version wordpress keeps updating to they don’t fix this issue I just want my code to show as is not what wordpress feels like putting in for me. like now I am trying to add a new post and inside of it I have an image and a description about the post and a link to something but wordpress is messing up my a href tag with paragraph tags & line break code, it deletes the closing a tag I am pulling out my hair with problem and I want wordpress to get rid of this problem now. also what gets me is it only does this once in a while to my a tags you think wordpress would fix this by now since they are the best to have for blogging and building websites but they still have not done anything about this issue it is only thing I hate about wordpress is messing up my code which I know I am putting in correctly.