Hi! For this sentence you would use “ go inside “ you would only use “get inside” with an area with a small space or somewhere that you cannot stand up for example you would say “ get inside the car” you wouldn’t say “ go inside the car” it depends on your sentence but generally “ get into something which is small ! Hope this helps 😁

Don't go inside is correct and don't get inside is not proper English. I have no idea what thought that is supposed to convey.

Don't go inside is correct and don't get inside is not proper English. I have no idea what thought that is supposed to convey.