What are the ways to improve your WordPress site’s speed?

Relevantos

Could you recommend me the ways to improve my WordPress site’s speed?
One of my colleagues suggested me these tips:

• Optimize images for speed on FLATsite
• Use faster plugins
• Choose a theme that’s optimized for speed
  So, i need to consult with you on what way is right for me and why.
  Any inputs?

cloudmate

Firstly, If its a Static Site, apply CloudFlare CDN on it which will make your website throughout the world. Next, Check GTmetrix which will give you an insight of which resources are loading slower and which needs minification. Thirdly, Check web page size, Limit to 1MB in all cases for best performance, Additionally, try to keep it 200-300KB only.

Use OpenLitespeed if your site gets too much traffic, Installing Caching plugins like WP-rocket(LScache in case of litespeed). Now You're all set for load time under 3sec.