Hi there,
I hope you are well.
I have more than 10 years experience in Linux, Apache, Nginx, MySQL and PHP. I also have experience in WordPress optimisation. There can be various reasons why your website is running slow. Can you please provide URL, so I can run some tests? Are you running your website on a shared hosting or VPS/dedicated server? I have a number of options to offer depending on your setup and budget.
Send me a message to discuss the details.
Regards,
Dmitri