Build backlinks SEO

My name is Bec and I have a shopify e-commerce store based in Australia. Thanks to some fantastic work by a freelancer, my website is now running smoothly. I have been working on my SEO for a couple of years and am ranking well in some areas, but would like to increase my backlinks considerably and anything else that can help improve my authority score. I currently don't have any toxic backlinks, so would like to keep it like this.

If you can offer any other suggestions for how to improve my SEO, this might also be included in the project or I will start another project separately for this. I track my SEO on SEM Rush.

If you're an SEO expert, please get in touch