If budget is tight, consider using Windows 11 unactivated for a while, or check if you qualify for a free license through work, school, or a Windows 10 upgrade. Remember: If a deal looks too good to be true, it almost certainly is.
Running Windows 11 without activation leads to several limitations: windows 11 activation key
: Purchased separately from a retailer or the Microsoft Store. These are transferable to different machines, provided they are only active on one at a time. If budget is tight, consider using Windows 11