HI, I can do the SEO of your website kindly do contact me at Syedmustafanadeem99@gmail.com. Thanks
For starters, you can focus on off page and on page of the site. Updating metas on all pages, heading tag optimization, adding alts text in images, optimizing schemas, robots.txt, etc needs to be updated.
I can give more details on how you can upgrade SEO if you share the URL.
The first step is to find a proficient SEO company, and I recommend https://websitestrategies.com.au/seo-consultant-sunshine-coast/Coast for various reasons. You can get a free quote on their website or contact a website strategist for further communication. If you want to do it on your own, they provide SEO trainings in person or online. I also did the SEO for my website on my own first period, but after decided to let a professional do it. You can start with promoting it on social media platforms and different communities, and slowly implement other strategies.