You'll need to create a new splits view in order to better filter your data.
<aside> 💡 What are splits?
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Next step is to add a custom filter to your view, similar to what's shown on this image:
The important thing is to add the type of accounts you want to filter for (ie. expenses or income) and a date for the period you want to filter for.
<aside> 💡 Hint: queries such as "this year" or "last month" will work
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Open the view editor and add a grouping for the Account column.
If you want to also group by transaction type (ie. income or expenses), you'll need to first ad a new Account supertype column and then add it as a grouping.