It sounds like you've come across an inspiring collection of ideas from 2022! This trend, which gained massive popularity during that period, is a deliberate commitment to a bold, high-contrast look rather than just an "indecisive" color choice.
Bright colors that frame the face to create a "money piece" effect.
Two-tone hair styles can range from subtle to high-fashion, with common techniques including:
Your starting hair color and condition will influence what's possible; a good stylist will let you know if a specific look might compromise your hair's health.
Are you considering a look like caramel highlights, or something more vibrant like platinum and purple? Balayage vs. Ombré: What's The Difference? - Matrix
Different styles require different levels of upkeep. For instance, dip-dyed ends are easy to manage as they grow out, while a reverse ombré requires more frequent salon visits.
Dyeing each half of your head a completely different color for a high-impact statement. Before You Start