Website loading very slow and unresponsive

[pastispresent]

1st change your Admin dir name 
Seems its unprotected and exposed for attacks and hacks https://xossipy.com/admin/index.php

https://xossipy.com/admin/index.php?modu...ange&gid=7
Enable Forum Jump Menu? Set this to "NO"

https://xossipy.com/admin/index.php?module=tools-cache
 Click (Rebuild & Reload All)

https://xossipy.com/admin/index.php?modu...optimizedb
Select All and click Optimize all tables

If possible repair and optimize all tables in your mysql

Do these steps
It will reduce server load considerably

I don't know any of that (lol) but thank you so much for your inputs, hope these changes would enable the site to run better.......really thank you!