It's been a long time since I had a night in the city, but it wasn't too bad last time I was there: https://www.coventryobserver.co.uk/news/get-licensed-study-names-coventry-second-worst-uk-city-for-a-night-out/

I doubt it's quite as bad as painted here. Safety is certainly a perceived issue, but that's been the case since I was a teen. Having worked in a lot of UK cities over the years I'd say Coventry was no better, nor worse, than other cities for a night out.