I followed those instructions to install (except I didn't verify signatures). The GUI started up and ran for quite awhile before shutting down. Didn't seem like libraries were missing.
How did you install Bitcoin core?
If you didn't install it properly it will end up like this so I suggest try to reinstall the Bitcoin core and make sure that you install the necessary components under this directory
/usr/local/bin and use sudo install to install bitcoin core.
I suggest you read this below and carefully follow the instruction on how to install it properly through Terminal commands
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https://bitcoin.org/en/full-node#linux-instructionsAbout the GUI you will need the required libraries to install to make the Bitcoin core GUI work properly. Follow the instruction from this link below
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https://bitcoin.org/en/full-node#other-linux-gui