What are the different ways to get high quality backlinks?

Hello Everyone,
I used to do marketing through different SEO techniques and my competitive site also was started on nearly the time i started website. But when i checked their backlinks it is much better than us , so what technique can I use to have high quality backlinks

Guest posting and Press release are the important ways to get high quality backlinks

1. Replicate competitors' best backlinks.
2. Analyze competitors' mentions.
3. Build backlinks with infographics.
4.Guest blogging.
5.Build a solid internal linking structure.
6.Outreach and promote your best content everywhere.
7.Give interviews.
8.Broken link building.