@mela2019 there is no way to send you a private message.
Can you post a link to your site?
Aivis Zvezdovs / ANTI 404
There can be multiple reasons for stores to slow down. How many apps do you have? Can you delete some of them? Did you check https://www.shopifystatus.com/ to see if there are any slow downs on Shopify side?
Try to run some diagnostics with https://developers.google.com/speed/pagespeed/insights to get more information about it.
You can also find some workarounds/addons to your store, like for example you can add some animation for page transitions to make it look more fancy when everything loads in the background.
There are even apps for this, for example:
Take a look, it may work well for you