Reminder that your google account has a name which is not just your email address. If you don’t use google’s other services besides gmail and youtube, you probably don’t remember what it is. And you probably put in something stupid if not completely offensive. If you suddenly have to use google docs or something, people will see it.
I’ve run http servers from my phone to copy files from it. For fun I made CSS for the file list and added an “upload file” button. I never got the php max upload size setting to take effect though. And I never bothered with that cert crap. But you CAN run web servers. I found the php web server worked best.