someone added some of my close family members (my grandparents, my parents, me) but there are mistakes and omissions. I can't figure out how to fix the records.
Hello @mimiboothby1. On the FamilySearch tree, people can only see those who are already deceased. We each have to put our own information in for each living person (including ourselves). However for any deceased individuals, you can edit information easily. You must indicate why you have done this and provide as much information as you can so others don't change it back. This article explains how you can do this.
You may also find the following useful. Following these steps can hopefully prevent or at least limit incorrect changes being made in the future.