I am unable to install any version of arduino-cli beyond 0.5.0-showports.

This is what I get when installing through curl the latest version of arduino-cli. Note that /root/bin/ is already appended to my $PATH.
root@s200:~# curl -fsSL https://raw.githubusercontent.com/arduino/arduino-cli/master/install.sh | sh
Installing in /root/bin
ARCH=ARM64
OS=Linux
Using curl as download tool
Downloading https://downloads.arduino.cc/arduino-cli/arduino-cli_0.21.1_Linux_ARM64.tar.gz
sh: /root/bin/arduino-cli: not found
Failed to install arduino-cli

However when installing version 0.5.0-showports or older it works:
root@s200:~# curl -fsSL https://raw.githubusercontent.com/arduino/arduino-cli/master/install.sh | sh -s 0.5.0-showports
Installing in /root/bin
ARCH=ARM64
OS=Linux
Using curl as download tool
Downloading https://downloads.arduino.cc/arduino-cli/arduino-cli_0.5.0-showports_Linux_ARM64.tar.gz
arduino-cli Version: 0.5.0-showports Commit: 3d7717e installed successfully in /root/bin

Version 0.5.0-showports does not contain all the functionalities that I need for the project, most importantly the serial monitor. Attached below are system information for my OS.

Linux version 5.10.96 (builder@buildhost) (aarch64-openwrt-linux-musl-gcc (OpenWrt GCC 11.2.0 r18729-8c1d5129ee) 11.2.0, GNU ld (GNU Binutils) 2.37)