Currently, to install cloudflared on a raspberry pi you need to download the arm64 binary or deb. It would be nice if it could to be added as a package to pkg.cloudflare.com .
Trying to use apt will return: N: Skipping acquire of configured file 'main/binary-arm64/Packages' as repository 'https://pkg.cloudflare.com focal InRelease' doesn't support architecture 'arm64' which would be expected.
Still a current problem.