I have a system with Ubuntu 20.04.1 LTS (only).
I have accidentally deleted the small 512MB partition which contained the bootloader (thinking I was modifying a USB drive - oops). Now it looks like this: https://i.stack.imgur.com/RBmNN.png
While the system was still running I created a Ubuntu 20.04.1 USB. After restarting, the system would not load so I booted from the USB and ran Ubuntu from there. I ran something called boot-repair which printed this: http://paste.ubuntu.com/p/Gp2Q5ZZ7jk/
I don't know what a lot of that means. Please send help.