In order to not burn your fingers, newbie traders should find a good balance. The brokers should have good trading conditions, fast execution of course and needs to be well regulated and secured. I always recommend EU brokers more than others.
trading conditions depend on the own trading needs but since newbies do not have a strategy at the beginning, since they need to find their way, just care for having smooth conditions and Spreads below 1 pip. ... it often SEEMS that all brokers have below 1 pip in eurusd, BUT real conditions while trading are mostly others 😉 so do not look on what they publish on their page, but check out via Demo or small live as well as research on the Broker.