In England, although you can gaze at the rock climbs near it Ilkley Moor (as its name implies) is nearly flat. Some of the Donalds are pretty good for that. Take your pick from these
https://www.walkhighlands.co.uk/Forum/viewtopic.php?f=9&t=80361. Mount Hill near Cupar (Fife) is good, but with trees most of the way round it, you don't get the views.
You would not believe that I was once horribly vertiginous. Husband looked back when we were just married and found me CRAWLING up Caer Caradoc in Wales, and as I child I had to cross the road to avoid the slight hill that joined the main road, as I thought I would fall if I went across it. Have since abseiled the Inn Pin (but unlike husband, turned down the opportunity to do it a second time with friends. Enough is enough)