How to install Magictricks from recovery mode? I am trying to root my old OPPO F1s following the tutorial on this link.

I am stuck on step two of rooting using fastboot.
When I enter the recovery mode and try to install the Magictricks.zip in my phone storage, it gives me the error message saying installation failed.
I also tried many other tutorials providing different packages and each time I try to install them using recovery mode it just always fails.
Currently, I haven't done anything that I can think of that may result in this failed installation cycle.

Any Idea how to install .zip on Oppo phones in recovery mode?

Also, I can't see SD card option in recovery mode while installing files.How can I get that as in most of the online tutorials and demos people do get this option?
My phone configurations:
Model: Oppo f1s A1601
Ram: 3GB
Android: 6.0
and enough space in both SD card and phone internal.
Try this Magisk app that I obtained from my friend's Repository which will help you to download Magisk.zip that you'll flash via custom recovery only and you'll be rooted

Note: If you haven't installed TWRP or CWM it won't install the zip. Configuring and using Fastboot are the basics you need to be and to flash the recovery though.

If new to these, read this guide here and get TWRP recovery from it