Thank you so much for the tips Jonathan. I am in a trouble the creation date has changed (to 2021) while the domain was first registerd on 2011. Does this mean that it's no longer an old expired domain?
If yes, then the "age" of the domain shouldn't matter as much as the age of the backlinks.
So if the old links are still pointing to it, the newer domain age shouldn't matter - you should be good. I would use a pages report in a backlink analysis tool (I prefer Majestic, but I know there are others :)) and then pull up the Wayback Machine to see what kind of data it has on the domain. Then work on rebuilding the essential pages from there.
Also, do I need to make the content of the homepage similar to the old homepage?
If yes? When should I replace the content of homepage like after 6 months 5 months ?
1 - yes. 2 - yes, as much as possible. 3 - 3 months minimum. anything after that is great but not necessary IMO.