Gimme a chance, will you?

I managed to be fairly ill last year and was in hospital for three months. One of the side effects of my stay is that I am not sure if my sense of balance is good enough to ride a bike. I am thinking about buying a recumbent trike, but at the moment we try to walk 10 000 steps a day. This means we are in the local woods a lot. As a pedestrian I notice that although cyclists want motorists to pass them with a distance of 1.5m, the same does not seem to apply to them. We have been passed recently by speedy cyclists within 10cm and it's no joke, because I am not that stable. I can move sideways without warning. A request to my fellow cyclists: Do me a favour, play fair and warn us walkers that you there, slow down and give us room. Just say "hallo". It is all we need. We can't always hear you and we are likely to jump the wrong way.