Looking for help

I recently installed fyde os on my Acer aspire 15, but i’d like to go back to windows.
I cannot, for the life of me, figure out how to do this successfully.
I’ve tried flashing a usb with windows 10 so, but when I try to boot from it the option isn’t available in the boot menu. I’ve tried changing the boot order in the BIOS menu, and turning off secure boot also and it did absolutely nothing. It always boots into fyde os every single time.

Reinstalling Windows has nothing to do with FydeOS.
What you need to do is make sure your computer can recognize and boot from the Windows USB installation drive. If your computer does not recognize the USB drive, then the most likely cause is that there is an issue with the USB installer itself.

Regarding tools compatible with FydeOS: the standard recovery tool doesn’t work correctly with the Windows 11 ISO. If you use Rufus or a similar program, make sure to select the GPT partition scheme instead of MBR. If the computer where you installed FydeOS is the only one you have, but you also have a smartphone, I recommend using DroidFish (or a similar Android tool). Note that this requires a USB-to-USB-C adapter. If you don’t have that equipment, I recommend installing Linux Mint and flashing the USB drive from there; Linux Mint is compatible with a wider range of reliable tools that work with your ISO image.