One of the easiest and most common ways to finance a trip among travelers is savings.
Having an amount of money saved gives you security before leaving, which is what helps you, at the same time, to gain courage to overcome the fear of going on a trip. Having at least the first month insured makes you feel calmer when leaving home.
Everything will depend on the trip you want to do and the pace you want to take. If you want a short and intense trip, it may be better to save first, if you do not mind spending more time, it will be easier for you to find ways to generate money along the way.
There are different ways to finance a trip around the world. You can save, become a digital nomad, work seasonally, sign up for a cruise.
The important thing is to set a goal and work to achieve it.