So, what do you enjoy? Or think you might?
What are your overall goals, what does "healthier" mean for you? For a lot of people, having a specific fitness/activity goal can really help too, so you can see progress and work towards something.
Are you wanting/needing to do things that dont cost, or can you afford to put some money into it, even if temporarily? If so, whats your budget? E.g. gym membership, sports club membership, personal trainer, coaching etc.
Strength training is way more important for women than a lot of people realise.
Whatever you choose, it needs to be something you enjoy for it to be sustainable. If you dont naturally "like" exercising (which can quickly change btw!), having a commitment to others can help - like booking into a gym class, or joining a team sport, or 1:1 training.