"After this" is a commonly used phrase to indicate a sequence of events or actions. However, if you want to vary your writing and speech, there are several synonyms you can use instead. For example, you can use phrases such as "subsequently," "later on," "in the future," "following that," or "afterward." These synonyms serve the same purpose as "after this," but they offer more variety and a richer tone to your writing or speech. It is always useful to have a range of synonyms to choose from, especially when you want to avoid repetition and enhance the clarity of your message.