Possibly broken W key?

I few hours ago I was using my laptop and all of a sudden in an instant the w key just stopped working as I was using it. I couldn't get it to work at all, no matter how hard I pressed the keys or in which area of the w key I applied the most pressure. Then it switched on me, and although I still couldn't press the w key, now it was constantly being held down without any input at all. As if an invisible force, which I am assuming is dust, is constantly pressing the key for me.

I decided to pop the key off, which I had never attempted before, and tried to clean out any hair/dust/matter that was lodged in it. I wasn't very successful in doing so and when I was pressing the plastic protusion to see if direct contact would be more effective, I pushed the plastic 'thing' right out of place and it popped off. It didn't fix anything and I don't know if it was glued in place or not but I can't get it to stick the same was it was before I pressed it.

Obviously, I should have just left it and brought it into a shop but now I am wondering if I have permanently ruined my w key and my if my whole keyboard will need to be replaced. I have also noticed my e and d keys are a little faulty too and sometimes will not work when I press them in certain spots.

By the way, every couple seconds my keyboard randomly spams the w key so I keep having to delete then continue typing, and since I can't press the w key, whenever I need to use the letter w I have to wait for a burst of wwwww's and delete the excess.

Thank for any feedback.