Every fight, every sponsorship, every endorsement, every per diem, every chance you get, put something away for the day the lights no longer shine on you.
In the sport of boxing, one punch or one injury could can leave you hurt or end your career. There are several insurances that accommodate professional athletes.
Nothing is free in this world. Nothing is free in the boxing business. Short term thinking and bad decision making has ruined a lot of fighters, long term.
Don’t put the sport of boxing before the business of it. You as a professional boxer are indeed a business owner. Learn what it means to be one and act as such.