Can't update ubuntu and can't install deb

Developer Tools Other Tools System Management and Monitoring (NVML)
1

when i run apt update i get an error
W: Failed to fetch http://ports.ubuntu.com/ubuntu-ports/dists/bionic/InRelease Connection failed [IP: 91.189.88.152 80]
W: Failed to fetch http://ports.ubuntu.com/ubuntu-ports/dists/bionic-updates/InRelease Connection failed [IP: 91.189.88.152 80]
W: Failed to fetch http://ports.ubuntu.com/ubuntu-ports/dists/bionic-backports/InRelease Connection failed [IP: 91.189.88.152 80]

and i can’t install nvidia sdk deb