This site has a ton of free, shareware, and demo VSTs, both effects and instruments. It tells you what DAWs they work on also as some are only for Pro Tools. Scroll down and you will see them.

https://www.pro-tools-expert.com/free-pro-tools-plug-ins-1?utm_source=convertkit&utm_medium=email&utm_campaign=Explore+300+Free+Audio+Plugins%21+%F0%9F%8E%89%20-%209190009#freeprotoolsplugins/?utm_source=convertkit&utm_medium=email&utm_campaign=Explore+300+Free+Audio+Plugins%21+%F0%9F%8E%89%20-%209190009

There are many sites where you can find great free VSTs such as https://plugins4free.com/
Also, I love analog obsession plugins because they are totally free and sound awesome.