Improve the SEO/CSS of my website https://karandeepsingh.ca/

My Website is built with: gohugo
Running on Netlify, Github.
I want someone who knows go language and have experience in improving the gohugo's templates.

Currently:
Lighthouse Shows
- 70 performance
- 75 Accessibility
- 83 Best Practices
- 82 SEO

You need to make it
- 90 performance
- 95 Accessibility
- 93 Best Practices
- 92 SEO

CSS for Algolio Search is also wrong on the mobile, text size is also need to improve.