You should immerse the player in a real sports game experience. You can choose your favourite sport to create the UI. My only suggestion is to select a famous sport, so it will be easier for you to find references to create a moodboard and materials to create the mockup assignments.

Game Examples
FIFA 23 (football), NHL 32 (Hockey), UFC 4 (MMA), NBA 2k23(Basketball), Formula 1.

I decided early on that I wanted the game to be based on the sport of Bouldering.

Noun - Bouldering

A form of free climbing that is performed on small rock formations or artificial rock walls without the use of ropes or harnesses.

Largely shown throughout the IFSC climbing season, the sport made it’s Olympic debut in Tokyo 2020 as part of a combined format. Like a lot of sports it has a large recreational audience, which is something I wanted to be a touchpoint for the game. Boulderers are very chilled and friendly people off the wall. It’s a great vibe, something I wanted to capture in the aesthetic of the game.

Cut Loose - When both feet swing off the rock and all the climber’s weight is taken by the hands.