Not sure if this is relevant for Python, but ...-linux_x86_64-... does not seem like the correct architecture for the binaries on the A64. Should be arm64 or aarch64 or sth.... if you don't find pre-built binaries for arm64, you probably have to start at https://github.com/tensorflow/tensorflow and built them from the source... it seems to have a Raspberry Pi target (32bit ofc) but you could probably copy that and switch the output architecture to ARM64...
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