I want to generate traffic from Australia for my website. How to get backlink? and How to reach Australian small businesses?

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I have a website, I already created around 12k backlinks but after some days lots of links, At this time its 2.63k. I check by SEO tools Thay show some of the links are deleted by if I Open that backlinks I can see my created links are still live. What is the problem? Please, anyone, help me.

I just have a note that I have many back-links, unfortunately, a big ratio of them are now "expired", "webpage not available" or "broken".


So is there any cause to fear about them? I barely want to avoid them because I guess they all already rejected...