https://www.google.com/search?client=safari&channel=iphone_b...
https://www.google.com/search?client=safari&channel=iphone_b...
https://granite-design.com/products/cricket-bell
I use this when i ride along a shared-use path.
It makes no difference. Either people are walking in a group and talking, so they don't hear it, or they have earphones in, so they don't hear it.
Possibly some kind of laser beam thing that sweeps the ground in front of you might work?
That's what the TFL bikes in London do[0]:
"The Blaze Laserlight is fixed to the cycle frame and projects a green cycle-shaped image onto the ground around 6 metres ahead of the cycle."
[0] https://tfl.gov.uk/modes/cycling/santander-cycles/blaze-lase...
Before I did my licence I was a firm believer in "no earbuds on the road", but after a few driving lessons I got so used to taking in the traffic situation with eyes only that I quickly converted to an earbuds all the time cyclist. A few years later I stopped driving so much and my cycling reverted to ears-always-open without me even noticing.
There are cheap bells that you mount on the handlebar but they tend to break easily (and don't produce much sound; typically just one ting). Decent bikes have a more sturdy design, see for example https://en.wikipedia.org/wiki/Utility_bicycle#/media/File:Du... (it's on the left, wrapped around the handlebar next to your hand). These tend to produce more sound.