I actually find what filler word people gravitate to a fascinating little personality quirk. Especially if they're more unusual ones beyond "like" and "um/uh". I had a supervisor who used "considering", which was notable considering how long it is. Arkansas gubernatorial candidate and former Trump press secretary Sarah Huckabee Sanders was mocked for her heavy use of "look", and most every Ronald Reagan impersonation includes "well" at the start of every third sentence or so.
I never had a voice and articulation class while in college, although I probably would have benefited from one given the number of broadcast media interviews I've done over the years. But I'm always aware of those things and make a conscious effort not to use them, especially on camera or in front of a microphone.
My boss uses "know what I mean" in this manner, quite frequently.
I went to high school with someone whose go-to was "let's see," pronounced "it see."