Megalo Box, Carole & Tuesday Recommendations
Besides one huge difference that Carole & Tuesday is an anime about music and Megalo Box is about fighting, there are a lot of similar things between them. The available technology that main characters choose not to use, the journey from nothing and poverty to the top, people that help them get to the top, the amazing quality and execution of the anime itself. I think there are and will be a lot more similarities but there is one thing I'm certain about - both of them are worth your time.
Both have the same story plot where it was set in a world were things were done that involves advance technology and certain characters who wants to break the stereotype that such things could still be done the old fashion way.