Hi and welcome to the community.
MS Word is definitely not forbidden here. I saw very well crafted documents done with MS Word. You just have to know what you are doing.
Overleaf is a great tool. But based on how it works, it needs to provide some stability to the users. That stability, in other words, means ... updates do not come that often.
Since Overleaf started and gained success, the LaTeX kernel (and many packages) have seen some great updates and bug fixes. Some are in Overleaf V2.
If you want to seriously start to work with LaTeX, download TeX Live 2019.
And of course, read an introduction

The smart way: Calm down and take a deep breath, read posts and provided links attentively, try to understand and ask if necessary.