@Stephen Liu
To avoid wasting suggestions, please advise
You are using Ubuntu 24.04 - Is that correct ?
Your Gimp version is 2.10.36 - Is that correct ?
You are using a regular install of Gimp 2.10 - not an flatpak / snap / or appimage ?
Do you have a working Gimp python installation - Is there a Filters -> Python-Fu entry ? No point suggesting any python plugins if no python.
Do you have gimp_gmic_qt plug-in installed ? - No point suggesting anything gmic if it is not installed.
For Batch processing do you have BIMP installed ?
Since your intention is a quick and easy fix for the the example images then the above information does help.
To avoid wasting suggestions, please advise
You are using Ubuntu 24.04 - Is that correct ?
Your Gimp version is 2.10.36 - Is that correct ?
You are using a regular install of Gimp 2.10 - not an flatpak / snap / or appimage ?
Do you have a working Gimp python installation - Is there a Filters -> Python-Fu entry ? No point suggesting any python plugins if no python.
Do you have gimp_gmic_qt plug-in installed ? - No point suggesting anything gmic if it is not installed.
For Batch processing do you have BIMP installed ?
Since your intention is a quick and easy fix for the the example images then the above information does help.