I’ve been given some new tips to improve my gig and I wondered, should I delete are redo all my gigs to be better or just edit the existing ones?
That depends. Mostly it’s better to edit your existing gig, otherwise you’ll have to start all over again with views and impressions. When you edit, you get to keep the views, impressions and reviews (if any).
However, if you think that changing the url to a more keyword friendly option would help you get more work, do it.
I think you can changes your key words what you wrote.