To increase the loading speed of the website

It is necessary to increase the loading speed of the website https://time-avenue.com.ua/

The site is made with Tilda .

Now the figure is about 40 on mobile according to google pagespeed.

Must be increased at least to 60.

At the same time visually on the website, nothing has to change .The quality of the visual images must NOT be degraded.

PS.

I am not a technician ,so I formulated the task as I could