Based on your query, I would recommend using Education CoPilot for your ESL one-to-one online class. This tool is particularly useful for creating lesson plans, which is one of your primary needs.

The AI Lesson Planner feature can generate a comprehensive lesson plan tailored to your student's level (A2-B1). This will save you time and allow you to focus more on teaching.

Additionally, the Educational Handouts and Writing Prompts features can provide supplementary materials and tasks for your student. These can be especially beneficial in a one-to-one setting, where personalized resources can greatly enhance the learning experience.

Lastly, the Student Reports feature can help you track your student's progress over time. This can be a valuable tool for identifying areas of strength and improvement, and for adjusting your teaching approach as needed.

Remember, Education CoPilot offers a free trial, so you can test out these features and see if they meet your needs before committing to a paid plan.