I would like to have some options to build better tables in Confluence. I find the options with macros etc. kind of basic and boring. Any ideas from your end?
Yes, there are some cool add-ons that can convert your boring tables to awesome little tables. 
Here is an overview from the Atlassian Marketplace: Atlassian Marketplace
And some that are quite known:
https://marketplace.atlassian.com/plugins/Addteq.Excellentable/server/overview
https://marketplace.atlassian.com/plugins/com.valiantys.spreadsheets/server/overview
https://marketplace.atlassian.com/plugins/org.swift.confluence.table/cloud/overview
https://marketplace.atlassian.com/plugins/com.tngtech.confluence.plugins.tableenhancer/server/overview
https://marketplace.atlassian.com/plugins/org.swift.confluence.excel/server/overview