When you are resubmitting your manuscript in a certain journal, do you usually use a specific template (from the journal, if any) or a free self-made template to answer the reviewer's questions/suggestions?
I typically just make a list that distills (1) all of the reviewers' concerns and (2) how I responded (and if I didn't, why I didn't). So in my field--my experience is--we don't have a set "template" per se. The goal is to just provide in a very simple, straightforward manner how we addressed concerns.
It depends. While some journals do make a template available for resubmission, some don't. I usually make a word document in tabular form where I put the reviewer's suggestions first on the left side of the table and my response to the suggestions on the other side of the table (I make sure I refer to the specific page and paragraph where the corrections done could be found by the editor).