I'm having a dilemma about my side project.

We decide for a name for our brand which seems to be quite popular and because of that the majority of the cool domains are already gone (ie: .app, .io, .com etc)

Now the one I'm really interested in is the .app which seems to have an owner but is not used at the moment, so i can try in make an offer to get that one, but I'm afraid this will cost us a lot of money for something probably not that important at this stage.

The project is growing and is getting traction but it's still considerably small, should we consider to re-brand now to find something which is available? Or wait to get this domain until it makes more sense/we have a better cash flow?