I Already saw some topics about theme speed, and i have that problem too.
I tried to apply the indicated information (https://leebrosusthemes.gitbook.io/organey/recommendation/optimize-wordpress), but dont saw any better.
An important point is that the slowness affects the mobile version (I already removed the slow plugins, slider revoluton, for example)
Here I separated the results of 3 optimization settings and we can see that the slowness is present in the mobile version.
Both the mobile version and the Desktop version are on the same server.
Leebrosus Instructions ( Autoptimize and WP Super Cache)
LiteSpeed Cache and EWWW
W3Total Cache and EWWW
What to do to improve mobile performance?