Difficulty in installing drivers or toolkit

Since this morning, I have been trying to install the Nvidia 1080Ti drivers and toolkit without success. Tried both on ubuntu 20.04 and 18.04. Tried several driver versions and automatic third-party installation within the ubuntu installation. I get several errors of failed to fetch when I install the driver. For example:

E: Failed to fetch https://il.archive.ubuntu.com/ubuntu/pool/main/libx/libxcrypt/libcrypt1_4.4.10-10ubuntu4_i386.deb 404 Not Found [IP: 2a01:4280:2:211a::70 443]
E: Failed to fetch https://il.archive.ubuntu.com/ubuntu/pool/main/g/glibc/libc6_2.31-0ubuntu9.9_i386.deb 404 Not Found [IP: 2a01:4280:2:211a::70 443]
E: Failed to fetch https://il.archive.ubuntu.com/ubuntu/pool/main/n/ncurses/libtinfo6_6.2-0ubuntu2_i386.deb 404 Not Found [IP: 2a01:4280:2:211a::70 443]
E: Failed to fetch https://il.archive.ubuntu.com/ubuntu/pool/main/libb/libbsd/libbsd0_0.10.0-1_i386.deb 404 Not Found [IP: 2a01:4280:2:211a::70 443]
E: Failed to fetch https://il.archive.ubuntu.com/ubuntu/pool/main/e/elfutils/libelf1_0.176-1.1build1_i386.deb 404 Not Found [IP: 2a01:4280:2:211a::70 443]
E: Failed to fetch https://il.archive.ubuntu.com/ubuntu/pool/main/libf/libffi/libffi7_3.3-4_i386.deb 404 Not Found [IP: 2a01:4280:2:211a::70 443]
E: Failed to fetch https://il.archive.ubuntu.com/ubuntu/pool/main/libu/libunistring/libunistring2_0.9.10-2_i386.deb 404 Not Found [IP: 2a01:4280:2:211a::70 443]
E: Failed to fetch https://il.archive.ubuntu.com/ubuntu/pool/main/libi/libidn2/libidn2-0_2.2.0-2_i386.deb 404 Not Found [IP: 2a01:4280:2:211a::70 443]
E: Failed to fetch https://il.archive.ubuntu.com/ubuntu/pool/main/libe/libedit/libedit2_3.1-20191231-1_i386.deb 404 Not Found [IP: 2a01:4280:2:211a::70 443]
E: Failed to fetch https://il.archive.ubuntu.com/ubuntu/pool/main/libx/libxau/libxau6_1.0.9-0ubuntu1_i386.deb 404 Not Found [IP: 2a01:4280:2:211a::70 443]
E: Failed to fetch https://il.archive.ubuntu.com/ubuntu/pool/main/libx/libxdmcp/libxdmcp6_1.1.3-0ubuntu1_i386.deb 404 Not Found [IP: 2a01:4280:2:211a::70 443]
E: Failed to fetch https://il.archive.ubuntu.com/ubuntu/pool/main/libx/libxcb/libxcb1_1.14-2_i386.deb 404 Not Found [IP: 2a01:4280:2:211a::70 443]
E: Failed to fetch https://il.archive.ubuntu.com/ubuntu/pool/main/libx/libxext/libxext6_1.3.4-0ubuntu1_i386.deb 404 Not Found [IP: 2a01:4280:2:211a::70 443]
E: Failed to fetch https://il.archive.ubuntu.com/ubuntu/pool/main/libp/libpciaccess/libpciaccess0_0.16-0ubuntu1_i386.deb 404 Not Found [IP: 2a01:4280:2:211a::70 443]
E: Failed to fetch https://il.archive.ubuntu.com/ubuntu/pool/main/l/lm-sensors/libsensors5_3.6.0-2ubuntu1.1_i386.deb 404 Not Found [IP: 2a01:4280:2:211a::70 443]
E: Failed to fetch https://il.archive.ubuntu.com/ubuntu/pool/main/v/vulkan-loader/libvulkan1_1.2.131.2-1_i386.deb 404 Not Found [IP: 2a01:4280:2:211a::70 443]
E: Failed to fetch https://il.archive.ubuntu.com/ubuntu/pool/main/libx/libxcb/libxcb-dri2-0_1.14-2_i386.deb 404 Not Found [IP: 2a01:4280:2:211a::70 443]
E: Failed to fetch https://il.archive.ubuntu.com/ubuntu/pool/main/libx/libxcb/libxcb-dri3-0_1.14-2_i386.deb 404 Not Found [IP: 2a01:4280:2:211a::70 443]
E: Failed to fetch https://il.archive.ubuntu.com/ubuntu/pool/main/libx/libxcb/libxcb-glx0_1.14-2_i386.deb 404 Not Found [IP: 2a01:4280:2:211a::70 443]
E: Failed to fetch https://il.archive.ubuntu.com/ubuntu/pool/main/libx/libxcb/libxcb-present0_1.14-2_i386.deb 404 Not Found [IP: 2a01:4280:2:211a::70 443]
E: Failed to fetch https://il.archive.ubuntu.com/ubuntu/pool/main/libx/libxcb/libxcb-shm0_1.14-2_i386.deb 404 Not Found [IP: 2a01:4280:2:211a::70 443]
E: Failed to fetch https://il.archive.ubuntu.com/ubuntu/pool/main/libx/libxcb/libxcb-sync1_1.14-2_i386.deb 404 Not Found [IP: 2a01:4280:2:211a::70 443]
E: Failed to fetch https://il.archive.ubuntu.com/ubuntu/pool/main/libx/libxcb/libxcb-xfixes0_1.14-2_i386.deb 404 Not Found [IP: 2a01:4280:2:211a::70 443]
E: Failed to fetch https://il.archive.ubuntu.com/ubuntu/pool/main/libx/libxfixes/libxfixes3_5.0.3-2_i386.deb 404 Not Found [IP: 2a01:4280:2:211a::70 443]
E: Failed to fetch https://il.archive.ubuntu.com/ubuntu/pool/main/libx/libxshmfence/libxshmfence1_1.3-1_i386.deb 404 Not Found [IP: 2a01:4280:2:211a::70 443]
E: Failed to fetch https://il.archive.ubuntu.com/ubuntu/pool/main/libx/libxxf86vm/libxxf86vm1_1.1.4-1build1_i386.deb 404 Not Found [IP: 2a01:4280:2:211a::70 443]
E: Failed to fetch https://il.archive.ubuntu.com/ubuntu/pool/main/w/wayland/libwayland-client0_1.18.0-1_i386.deb 404 Not Found [IP: 2a01:4280:2:211a::70 443]
E: Failed to fetch https://il.archive.ubuntu.com/ubuntu/pool/main/libx/libxcb/libxcb-randr0_1.14-2_i386.deb 404 Not Found [IP: 2a01:4280:2:211a::70 443]
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?

Okay, I manage to solve it by changing all the URLs in /etc/apt/sources.list to fr.archive.ubuntu.com / ubuntu.lafibre.info. Then I did: sudo dpkg --configure -a .