Gui for for youtube-dl.....tried all the tips and tricks nothing works ! in Ubuntu 20.04

There you see the requirements. You need to install those first. If some are not available from a repository, you can compile them manually. Done that, it should work.

So it seems like this should work:

sudo apt install -y libgtk-3-dev gettext ffmpeg python-pip
pip2 install -U \
    -f https://extras.wxpython.org/wxPython4/extras/linux/gtk3/ubuntu-16.04 \
    wxPython
pip2 install twodict
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