Hi folks, the path that leads to my front door is quite steep and when the house was built 35 years ago there was a steel handrail along the path, but it fell into disrepair at some point and was removed by previous owners. I now want to rebuild a new one so that my elderly relatives can hold onto something as they traverse the steps down to my front door. As you can see there are no walls I can screw a balustrade to so this railing needs to stand on its own while mounted into the earth.

What would everyone suggest for this?
Many thanks!!