I think it’s gonna be hard for you to find anything that isn’t at least working 4 days.
I work in HR and have been looking for part time work for about 5 months now. The market is really saturated right now and part time jobs few and far between.
I think it just depends on what you’re interested in doing. As if it’s something you haven’t done before, they usually require you Monday to Friday for the training I guess you could look if job offer flexible working