How to catch the pace of learning web development? [closed]

all! Hope you all have a great day! I'm currently a junior web developer and I'm aiming to be a fullstack developer in the future. However, I had already tried my best to keep learning web development related skills, but there are so many new techniques show up in the field of web development. So, I'm so confused how those senior engineers can master the tons of web development skills; and how should I make up an appropriate plan for me to be a senior engineer? Thanks in advance.