Have a look at a Mantis, LL.
https://mantis.uk.com/product-category/tillers/They're quite light, very easy to drive and manipulate in tight corners, and while you do need to pull the cord to start it, once it's going it'll just work all day! (I don't know about the electric version, but wouldn't have had one anyway, as there was no power on 'The Patch')!
They're not cheap, but a basic one - i.e. not the De Luxe, is just fine for most jobs, but remember, it is just a tiller, not a full-blooded rotovator, so it'll only work down to a maximum of about 10", and prefers ground which has at least been dug to rough clods, so that may be an issue with said wonky bits...
If you'd like more advice, post it here, and several of us can help, because there are a few ways to make tilling easier, by using different tines in different ways etc!
Ebay always have a few, but if you can, (and the price is a bit of a gulp - Mrs Growster bought mine for several birthdays and a couple of Christmas pressies, plus Father's Day, Walpurgis Night, Guy Fawkes, Advent, Easter, etc. etc.), it's worth saving up for a new one, then add the other bits over the years as/if you need them!