PS: This tutorial is for beginners like me. Probably users will say a lot of things against ms office, but if you are a student you have to adjust with your local library set doc format, which will be dependent on ms office. So, take a deep breath and lets start.
First option: WPS office. Why? Well, its the one which best suited me in many aspects which are more similar to ms office and doesn't unset the doc format.
Step one: download and stall: https://www.wps.com/
Steps two: open your Linux terminal and type this commands:
sudo apt install msttcorefonts
Thats it, your docs will probably be very similar to office ms. But if you still have some problems, see the seccond option. If you need more help on these steps check this video: https://www.youtube.com/watch?v=k3R58a0cg0Y
Seccond option: Office 365 online.
Why? Well, it`s free for students and you will have no problems at all with unset formats. Even better, your documents will always be on cloud, so its always saved for you. Believe me, you can adapt to use office on your browser and having everything on cloud is safe from losing it on crashed pendrives. Lets start:
Step one: Make an institutional email on your educational institution. You will need it to prove that you are an actual student.
Step two: put your institutional student email and log in with it to this ms link: https://www.microsoft.com/pt-br/education/students
step three: Wait for ms office email you, normally it took less than 24 hours.
Well, it's simple, but these simple steps took me from fully migrating to Linux for almost a year when I finally discovered all these possibilities. I wish it help you someway.