How to process the message arrival event through the VK API?

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Hello! I want to create my own simple chatbot that will be in a conversation and when someone writes a message like "Bot, hello", it will respond. Such bots exist, but I ran into the problem that the VK API does not allow using the Callback API for simple pages.
Can you tell me if I can get the behavior I want? If so, which parts of the API should be used?
I read about Long Poll, but I will keep the script on a regular hosting, where it will not be the most suitable solution.