What can I do if apps are taking too long to open?

You can solve this issue by clearing the app data.
Step 1:
1. Go to All Setting

2. Select Apps

3. Click on See All Apps

4. Select BYJU’S Launcher

5. Select Storage and Cache

6. Click on Clear Cache

Step 2:
1. Go to All Setting

2. Select Apps

3. Click on See All Apps

4. Select BYJU’S Premium

5. Select Storage and Cache

6. Click on Clear Cache