Tool that show previously used Link & Too that automaticly add Link when something is link to the note

Hi, I’d like to know if there is a tool that show you used Links so that when you made a new notes it’s faster to add all the necessary link that you used in the previous notes that are link.

Also a tool that automaticly add Link under a ## Tags (Title) based on other notes that have made a link to this note would be very usefull, I don’t know if it’s possible to do using Templater, but I currently have no idea on how to use Templater