If you want to earn better, you should start learning skill that is in demand. If you do not have professional skills, you have minimum chances of making money, thus, you need to level up. There are a lot of platforms where you can start learning. The best thing about these platforms is they have tailor made courses than allow you to learn professional skills in a couple of weeks. You can try platforms like Udemy, Skillshare, Coursera, Masterclass, Alison, LinkedIn Learning, etc. Based on my personal experience, Coursera and MasterClass are the best online learning platforms. Courses on Coursera are offered by universities or professors, and courses on MasterClass offers courses created by industry leaders.