"SEO tools" are just to automate your manual work, If you don't know what you are doing and keep using such tools then instead going up you can hurt your site ranking, Stop using SEO tools unless you are not very familiar with how SEO works.
I own various tools, some I developed and some purchased from other developers but each has its own usage, If you know your tasks how to do manually then it will not be hard to choose a tool to automate your tasks.