IMPORTANT: you did not loose your files, they're on your HDD/SDD.
Was your machine outdated for a long time? I had this problem and could not solve it. Your PC is not bricked - W10 can't boot properly. Your files are all intact - you can either copy them with a Linux (Xubuntu is the one I use) live memory stick or reinstall W10.
- Xubuntu Live - you'll find info on how to do the live boot online. Do not install! Choose "try without installing". All you have to do is connect an external HDD and copy the files. If you have any problems mounting the internal HDD, send a message - I can't leave home anyway!
- This might be the best for most people: Do a recovery. I'll search a guide and post here. You must choose "keep my files and documents".https://www.lifewire.com/reset-this-pc-2626216
The best practice is to use (1) for a backup and then do (2).
Please, read carefully the instructions and remember that you must choose the correct option otherwise you'll loose your files.
Daniel, your machine is probably not bricked. "Bricked" means it does not move, does not make a noise and no LEDs turn on. If it turns on, it's not bricked. I've been installing windows since 3.1 (yep, I'm that old) and never saw a single machine get bricked. I'll keep an eye out for any questions!
All the best, stay home, wash your hands, cover your face but please do not use professional masks - health workers across the globe need them.
Disclaimer: I'm not responsible if anything goes wrong. Try at your own risk.