Now, I don't want to write about everything, but I must write something for my every day's in order to make progress.

InDuring these holidays, I was in another town with my cousins.

Unfortunately, now I must come back into my city, because the holidays have ended.

NowAt the moment, I don't want to write about everanything, but I must write something for my every day'sdaily progress.

daily = talking about something scheduled/habitual/regularly done
"At the moment" = when you use 'now', it's usually directly comparing to another time, and it has a fixed/decisive feeling. but when you use "at the moment", it's more suitable for temporary feelings and situations, or things that might change in the future. it also feels softer and more conversational.

In theseDuring the recent holidays, I was in another town with my cousins.

it's better to use "during" when you're talking about a period of time (e.g., "during the week", "during holidays", "during summer vacation")
recent = more suitable to use when talking about time than 'these'

Unfortunately, I must comeback inreturn to my city, because the holidays have ended.

"return to" = when you have an original location, then you leave it, then you go back to the original location, you can describe it like this. and verbs about movement between locations use 'to', usually (e.g. return to America, go back to Rome, come to Japan)