Elderly lady needs your advice about weed cutters

Hello you all,

I am an elderly lady and I am looking for a weed cutter or weed eater but none of these electrical. They scare the hell out of me. I am looking for a mechanical one.

In the past, I used a grass shear to cut certain area of my lawn but they are like scissors and I have to stand up and go down and stand up and go down and that makes me often groggy.

I would like something with a long handle that I don't have to go on my knees all the time.

I am not the strongest person, so, l the weed cutter should not be that heavy. But of course I still can hold a broom.

I found some links and would like to know if any of you know these tool and how difficult they are to operate.

Have a look here:

I thank you in advance for your advice.

Helen