Too many plugins can lead to security breaches on your site, site crashes, bad performance, slow loading speeds, and more.
It may come as no surprise that piling a ton of plugins on top of each other on your website can cause some conflicts.
Some plugins will disrupt the way others function, causing problems on your site.
Details:
https://pressable.com/why-its-smart-to-limit-plugins-on-your-wordpress-site/