To improve the website's speed and performance, follow the instructions below.
1:Always try to keep your WordPress updated.
2:Use only high-quality plugins.
3:Compress your files.
4:Delete unused plugins.
5:Use a lightweight theme.
6:Same is the case for themes, use only high-quality themes. This will help to improve the performance.
7:Always keep your plugins and themes updated.
8:Try using image optimiser and compressor plugins, this will help to improve the speed while loading images.
9:Remove any unwanted files under your Webroot.
10:Optimising the Database.