Possible response:

If you are looking for a YouTube channel that offers one-shot lectures for advanced level topics in JEE, here are some suggestions that might help:

1. Unacademy JEE: This channel features lectures by experienced educators on various subjects in JEE, including physics, chemistry, and mathematics. The lectures are organized in chapters and cover the entire JEE syllabus. You can also attend live classes and ask doubts in the chat. The channel has more than 1 million subscribers and offers both free and paid courses.

2. Vedantu JEE: This channel provides lectures, quizzes, and revision notes for JEE aspirants. The lectures are delivered by teachers with years of experience in coaching JEE students and cover both theory and problem-solving. You can also interact with teachers and peers in the doubt-solving sessions and the community forum. The channel has more than 800K subscribers and offers free and paid courses.

3. Mathongo JEE: This channel focuses on mathematics for JEE and offers short videos on various topics, formulas, and tricks. The videos are concise and easy to understand, and provide examples and practice problems. You can also download the Mathongo app to access more resources, tests, and solutions. The channel has more than 500K subscribers and is free to use.

4. JEE Mains Guru: This channel specializes in JEE mains and provides lectures on physics, chemistry, and mathematics. The lectures are based on the latest syllabus and exam pattern of JEE mains and cover important concepts and formulas. You can also download the notes and practice papers from the website. The channel has more than 200K subscribers and is free to use.

5. EduRev JEE: This channel offers a wide range of lectures, tests, and study materials for JEE aspirants. The lectures are delivered by top educators and cover all the topics in JEE mains and advanced. You can also access the EduRev app to personalize your learning and track your progress. The channel has more than 100K subscribers and is free to use.

In conclusion, there are several good YouTube channels that offer one-shot lectures for JEE aspirants. You can choose the one that suits your learning style, pace, and preferences. However, remember that watching lectures alone may not be enough to crack JEE, as it requires consistent practice, revision, and problem-solving. Therefore, use these channels as a supplement to your coaching or self-study and try to apply the concepts learned in solving JEE-level problems.