What do I do? (about online school during covid - 19)

It's much easier said than done, but really try not to panic about it as this could prevent you further from working. it sounds counter productive, but it might be useful to take a step back from school work for a moment and spend sometime doing something else e.g. reading a book, drawing etc. By allocating some time to do something you actually want to do, you might feel more focused when it comes to doing your school work.

Everybody's working strategies are different but one thing that helps me is to imagine a switch between 'work' and 'play' in my head. Decide whether you're going to just do work, or just rest, because sometimes by not making that clear decision with yourself, you're allowing yourself to get distracted. Remember it is important to have some you-time too though! So when you're mind is on the 'play' switch, make sure you are resting!
When I'm on my work mode I make sure to leave my phone in another room so I'm not tempted to use it.

As for getting the work done itself, I recommend trying to make a small plan of what you need to get done. At the start of the week I get my planner out and write what I plan to do each day, splitting my tasks up. The key here is to be realistic with your planning! Don't set huge amounts of work, knowing it's going to be difficult to complete because it'll make you feel disheartened and unmotivated! By dividing your work into manageable chunks across the week you can see that if you stay on task, you will get it all complete and this can be really reassuring. Once you've done the work you've set out, allow yourself to have a break. Take a breather and assure yourself you'll get everything done by assessing your plan.

If you're struggling with the work or the workload itself make sure you contact your teachers as they can't help you with this if they don't know. Look at further online resources to consolidate your understanding if you're unsure. Find what revision techniques work best for you.

You're only in Year 9 so you've got plenty of time till your GCSE's. It's good to be on track but don't be too hard on yourself!