Problem for embedding a widget via html code

Hello everyone, I am writing to see if anyone has had the same problem as me.
I’ve been trying for a week to find the solution, but I haven’t found it. Before in the blocks, we had the possibility of integrating a widget by clicking on “vidalytics” it seems to me.
I can’t find this block anymore. Do you know if there would be an alternative to integrate a widget with an html code.