Add views (sum of a number field) into computed field

I have three field in a content type, date and category and amount.

Based on amount field, I created a views to get total amount (aggregator views) by category as argument.

So in this content type I want to add a computed field, which will give me cumulative total (sum of all previous amount (+) current amount, current node category as criteria).

Is is possible by adding a views inside computed field of drupal 8, or any other way (rules/sql of drupal 8) to achieve it. I am new to drupal, looking for solution for my project.

Please help me to get it done by providing ideas, codes or reference, I am not coder, I just trying to learn it!