How to increase security of a Laravel site

I am a beginner in Laravel. I have a live project(ex:https://seniorcitizenhospital.com/) made with Laravel.

But while I use site::https://seniorcitizenhospital.com/ in google search engine for security checking it gives me a search result like below image

I can't understand how to remove these from my site.

Anybody Help Please? Thanks in advance

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