It's always better to do it in the presence of professionals.
Fun fact: my girlfriend and I have occasional arguments over which of us is the hot one liking normal people's profiles on dating sites.We did use to joke about how more women came onto her than onto me when we went out. Of course, there were also more men coming onto her than onto me, so I might just have to accept that, at least at the time and regardless of the dexterity of our respective fingers, she was way hotter than me.
Which is silly, it's clearly her
If you use your finger it's relatively safe! Much safer than using that plunger thing at any rate.