Insufficient space for iPhone 13 backup restoration

Hello,

I have had an iPhone 13 for 3 years, and after this time, it started to lag, so I decided to erase and restore it. I made a backup on my Windows PC using the Apple Devices app, and then I completely wiped the phone. After that, I wanted to restore the phone from the backup, but I got a notification saying that there’s not enough space on the phone.

Is there anything I can do about it? Everything is updated, and I don't know how to free up space since there’s nothing on the phone and there’s free space available. The iCloud backup is missing half of my files, so I really need the backup from the PC.

[Re-Titled by Moderator]