Hi
I work in HR, so not very techy, so please be patient!
I want to create a survey which our managers will complete for employees in their team. I have approximately 20 questions, most of which will be on a continuum, using a 7 point scale. See below for an example...

I have looked at Microsoft Forms for this, but the range of question types seems very limited, and I can only create the above image in a vertical sense, which I don't want, and it requires me to enter text at each marker, which I don't want. Again, see the example below...

Someone recommended PowerApps had more functionality than Forms. Is this the right solution for me?
I have watched the introductory videos, and most suggest I should start with a sharepoint list. Any suggestions on how I would structure my sharepoint list if I want to create the continuum image above?
Thanks in advance for your help, and please remember, I am not a tech person, so please be gentle!
Thank you.