Portable executable on Ubuntu 22.04

[bertalanimre]

I have a simple question: How do I run the downloaded portable version on Ubuntu? I have no clue. I am trying to upscale an old series in AVI format.

bi@bi-homestation:~/AIEnhance$ bash ./realesrgan-ncnn-vulkan -i ../Blue/Blue_Gender_01.avi -o ../Blue/Blue_Gender_01_upscaled.avi -n realesrgan-x4plus
./realesrgan-ncnn-vulkan: ./realesrgan-ncnn-vulkan: cannot execute binary file
bi@bi-homestation:~/AIEnhance$ sh ./realesrgan-ncnn-vulkan -i ../Blue/Blue_Gender_01.avi -o ../Blue/Blue_Gender_01_upscaled.avi -n realesrgan-x4plus
k/realesrgan-ncnn-vulkan: 1: z��
 L!: not found
./realesrgan-ncnn-vulkan: 2: Q: not found
./realesrgan-ncnn-vulkan: 3: �: not found
./realesrgan-ncnn-vulkan: 4: =��ml: not found
./realesrgan-ncnn-vulkan: 5: �
                              �: not found
./realesrgan-ncnn-vulkan: 1: �@8@6@@PPPXX: not found
./realesrgan-ncnn-vulkan: 1: ELF: not found
./realesrgan-ncnn-vulkan: 11: Syntax error: "(" unexpected
bi@bi-homestation:~/AIEnhance$ python ./realesrgan-ncnn-vulkan -i ../Blue/Blue_Gender_01.avi -o ../Blue/Blue_Gender_01_upscaled.avi -n realesrgan-x4plus
SyntaxError: Non-UTF-8 code starting with '\xb6' in file /home/bi/AIEnhance/./realesrgan-ncnn-vulkan on line 2, but no encoding declared; see https://python.org/dev/peps/pep-0263/ for details

So how to run it?