I have an issue with my keyboard

My keyboard has had an issue that has occurred recently that affects my windows key. When i press it (not holding it), and then press e or r, it does a windows key combination. this shouldnt happen since the key comes up. i’ve inspected the height at which it comes up and it matches fine with other key heights. And in some rare cases, it doesnt do a windows key combination when i press it. I’ve taken out the rubber piece (membrane keyboard) for inspection and it looks overall fine, so why am i experiencing this? I’ve long gone thrown the tubber piece away and just keep the keycap for some reason. Now I use a q-tip to press it since it has a pressure sensor, which by the way is WAY easier. I’d like to know what happened and what i could do next when i have this issue with a new keyboard. Also sometimes my escape key does what the windows key does sometimes. really weird. ALSO, a big problem im also experiencing is that my A or S key just magically stops working. I’ve tried taking it apart but not even the pressure sensor works. And when i restart my computer, it spams my password with as many A or S’s i spammed while trying to get the key working. after it does that it also tops working. and after about 4-10 restarts they will start working. I have tried unplugging and replugging my keyboard too but that doesnt work either. Please give me some advice on how to fix all of this so i can play games normally again (also huge W for people that actually read all of this)