Optimize images weight!
Original, 2.8 MB: https://hubl.world/img/photo-hero-circles.png
Lossless optimization, 636.9 KB => -77%
Thanks to the panda! https://tinypng.com/
Apply this to the 3 png images and you can reduce the total site weight by at least 50%.
Then you can also optimize SVGs weight with this awesome tool: https://jakearchibald.github.io/svgomg/
Maybe another ~30-40% gain per SVG.