Filter by custom taxonomy !?

Are you using Event Categories? Let’s say your event category id is 393 then you can use the following to display the events with that category.

[event_list category="393"]

You could use the Query Loop block (part of GenerateBlocks) to display the events:

https://www.ads-software.com/support/topic/show-in-rest-api/

https://docs.generateblocks.com/article/query-loop-overview/

https://docs.generateblocks.com/article/query-loop-examples/