it's not question about image optimization, it's about size of image and format. It must be webp

2. I already wrote you reasons. 

3. You can't expect good speed on slow hosting

4. Your cache plugin (Autoptimize) is not proper configured and in current point it's slowing down site and breaks all scripts. 

We provide paid service for optimization. Price is $120. Includes page optimization and cache configuration. This also can require hosting migration. Depending on budget, we recommend few: WPX (average speed, good price), Cloudways (very scalable and a lot of plans), Rocket.net (high price, but good server response time)

I have optimized the images via https://imagecompressor.com before I uploaded them, but unfortunately I can't optimize the product images as they will be uploaded from affiliate feeds. The images I could, I have deleted for now.

1. what plugin would you recommend to automatically optimize images when uploading?

2. what besides, else images?

Thank you

First of all, you are using too big and not optimised first image. This is

I try this create this https://mag.grafan.cz/hlavni-stranka-test-gutenberg/ and optimize with Autoptimize, Async JavaScript but the results are still bad.

https://wptavern.com/what-are-block-themes-what-you-need-to-know-before-wordpress-5-9

I'm not sure I understand.

e.g. What is block themes and Classic?

It’s possible in block themes but not in classic. Currently we are moving
some popular Rehub features to block theme and we will provide big discount
for Rehub users if they want to switch to new Block theme

Пт, 20 мая 2022 г. в 22:15, Sizam Support Help Desk <
sizamtheme+BZnED3qjeAerjXpPdmkb@mail.support-hub.io>:

I'll try, and if I can't, I'll make a deal.

What I'm still wondering is if "Greenshift - page builder" can edit specific pages like search, sections, posts, blog, etc. like Elementror...?

You can send me design which you want and hire our customization team for this purpose. However I don't see anything special on your page. It's just set of post blocks and you can find the same copies  in Gutenberg as in Elementor. Even options of blocks are the same as you have in Elementor. 

You can find also some tutorials in our channel https://www.youtube.com/c/WPSoul/videos

Could you help me set up the Home Page in greenshift? We've talked about this before.

It would be a good tutorial, a guide for me.

Use greenshift plugin instead elementor

https://wpsoul.com/how-optimize-speed-of-wordpress/

Also remove your cache plugin or proper configure it. Currently it's made more bugs than solve something

Hello,

the website is very slow. Can you recommend me some plugin that you have tried and would noticeably speed up the site?

Thank you