Website Load Time Investigation

My website has suddenly started taking over a minute to load, and I need a professional to investigate and rectify this issue. The site has not been updated or changed recently, and it is hosted on a shared server. All pages are equally slow, so the issue doesn't seem to be isolated to certain parts of the site.

Ideal skills and experience for this job:
- Expertise in website performance optimization
- Experience with shared server hosting
- Proficiency in diagnosing and resolving loading issues
- Familiarity with common web performance metrics and tools
- Ability to implement long-term solutions to prevent future issues