It seems you have some cancelled image requests (see screenshot below) and are loading images twice (could be due to incorrect application of lazy loading). Most likely you will need a developer to fix these issues.
We offer an in depth free speed site audit for shopify stores, which will give you a report of things you would need to do to improve your site speed. If you are interested https://estorespeedoptimization.com/
I also navigated around your site and everything loads quite fast for me. We typically see Shopify Speed Scores range between 15-30 on average (so you're above average here). Here's an article we wrote that goes into more detail on the speed score: Shopify Speed Tool Analysis + How to Make Your Site Faster.
The same can be said about Google's PSI tool. While it can provide some good info, not all of it is applicable to Shopify sites. A score of 50 on here is pretty good and is above average based on all the sites we come across. We have an article that goes into more detail on their tool as well: The Truth About Google PageSpeed Insights for Shopify
Apps tend to have a pretty large impact on this score, so it's best to keep the list of your installed apps to a minimum. If you uninstall any apps, you'll also want to comb through your main theme files to ensure no code is leftover (this is a pretty common issue).
Beyond that, and based on your Analyzer report, I'd recommend a few things:
If you'd like to check out our main optimization recommendations + how to do them yourself, feel free to read over our optimization guide: How to Optimize a Shopify Site: Complete Guide to Faster Load Speed.
If you'd like assistance with anything, you can reach out to our optimization experts at speedboostr.com/contact.
I'm Richard - CRO Expert at PageFly Free Page Builder.
I saw that you got many answers but I want to tell you one more way and tips to test your speed and optimize it. I just tested your website on both my Samsung and iPhone and PageSpeed Insights app. You can see the reason via its’ report here: https://developers.google.com/speed/pagespeed/insights/?hl=vi&url=https%3A%2F%2Ftemizsoyayakkabicili...
Your page works quite well on the desktop. The tool gives 92 points for desktop devices. You should consider the mobile analytic results:
1. The biggest reason that makes your page run slowly is from rendering blocking resources: Resources are blocking the first impression of the page. Consider delivering important JS / Inline Styles (CSS) and deferring any non-critical JS / styles. You can click to this field on the report for more detail.
3. A small comment for optimize your images and delayed loading of off-screen images:
Consider partially loading hidden and off-screen images after all your important resources have been loaded to reduce interaction time. If you want to optimize your images to help your page loading speed faster, you can use some of the image optimization tools like ImageOptim, Shopify Online Image Resizer, tinypng.com or imagecompressor.com.
And If you have images that go with .PNG file, you can convert them to .JPG or .JPEG files
Besides, you should check both Mobile and Desktop devices in the report to have maximized the effectiveness of speed optimization:
Finally, you can consider some tips to improve the speed page about How to Speed Up Website and Optimize Page Load Time To Win Sales.
By the way, I'm working on PageFly. We are a Shopify page builder to customize your page, our app provides the Lazyload function and it's easy to use with a drag-and-drop system and less code needed. Here is a reference: PageSpeed Optimization.
If you find my comment useful, you can like it. And let me know if you want further assistance.
Have a great day!