Localhost won’t migrate my website

I’m not sure how exactly to put this, but I have tried to migrate my localhost site to my wordpress site with hostinger four times now. What pops up on google is a “your connection is not private, hacker’s may steal your information”, etc… I’m not sure how to fix this. I have verified the SSL certification multiple times, retried the migration, verified that everything looks correct, and it still won’t work. I don’t get it. I decided to look it up on my iPhone and see if I got a different message, and what popped up was the old un-updated version that was at the very beginning stages. This is my second time migrating a website from localhost to Hostinger, and I’m beginning to wonder what I’m doing wrong. I had problems with the first one too, but nothing this big. Any help would be appreciated. Thank you.

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