OK, this is the problem. Arduino IDE 2.x is built for x86-64 architecture.
Yes, and it is x86 as well, so the hardware should be compatible with Arduino IDE 2.x. The problem is that it seems you have installed the 32-bit version of Debian. The getconf LONG_BIT command tells us the bit width of the operating system, not of the CPU. Even when the hardware can support a wider bit width, the effective bit width is determined by the operating system.
So I think you could solve the problem by installing the 64-bit version of Debian on your computer.
The alternative is to use Arduino IDE 1.8.19, which is available in a 32-bit version (though it is possible you might find that the independent binaries of the tool dependencies of some boards platforms might still be 64-bit). If you choose this solution, you can find the download link for Arduino IDE 1.8.19 here: