What do I need for this? Perhaps you can share some useful tips with me.

How Do I Create My First Movie?
Here's how I did it.
From the moment you start writing the script, be realistic. ...
Rent – don't buy – your camera. ...
Pay your (small) crew. ...
Have the actors supply most wardrobe and props. ...
Sign on to the SAG Ultra Low Budget Agreement. ...
Don't write music into your film unless you have explicit permission or own it.

do you want to create your own movie? I think you should start exploring the field of video editing because quality editing of a movie plays an important role in its perception by the viewer. I think that the wide possibilities of this video editor https://www.movavi.com/imovie-for-windows.html will pleasantly surprise you. start with short videos. it will help you improve your skills in this area and learn how to edit videos quickly and efficiently. I hope that your film will become worldwide popular and make you a successful person

Movavi video editor is used by my friend and advised me to use it too. I think I should try to study this

If you ask me o, I will wholeheartedly tell you that "I'm tired of watching all these Nollywood movies with poor visual effects, especially all these their fake gun shots, fake fire and fake disappearance, amateur car accident scenes... a lot of it. I guess that's one of the reasons their script virtually look the same.
I saw a video on YouTube; these Nigeria guys recently started teaching Nigerians on how to create movie effects. I researched and did chat with one of them. These guys have been underground doing their visual effects thing. When I wrote them, their response was more like they don't want to forcefully grab the industry. I have that feeling that they are into something BIG... well, who knows?! I feel they are going to be one of the best VFX companies in Nigeria. I also watched one of their music video effects. Mehn! Bro, these guys are good.
I started reasoning on how they could change the storylines in our Nigerian film industry (Nollywood movies). At least if it won't be a bad idea if I see a Sci-Fi movie produced in Nigeria.
You should watch their video on Facebook or YouTube to see for yourself.
https://www.facebook.com/vfx9ja

https://www.youtube.com/watch?v=jkGgpcczzlU