Especially if you spent previous life being focused on work and family now is the best time for concentrating on yourself. Take your time to explore, meet new people and take up new activities. Spend time with people who bring good emotions and don’t be scared to stay away from those being negative and toxic.
Don’t consider dating exclusively as a way of finding a partner.
Take is slow, don’t hurry, get the most fun of seeing the people and going out - it is your chance to open up a new world and enjoy being single rather than jump straight into maintaining the household again. Find people who share your interests, spend time together, make new memories and discuss your past experience - all in all do whatever you wanted but never had time for.