Slow website

Hello!
I have Woocommerce webshop that I just created but I have no clue why it is so slow. I have switched off some plugings to test if they make website slow. I dowloaded new plugins that should help optimize website (Expires Headers, Image Optimizer, Performance Score Booster, Super Cache).
https://tools.pingdom.com/ page says that: Make fewer HTTP requests, Use cookie-free domains, Add Expires headers, Avoid URL redirects.
So thats why I downloaded optimize plugins. But no help.
I don’t know what else I can do…
Please help! Thanks!

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