"Gets involved in" is a common expression used to describe a person's participation in an activity or situation. However, there are a few synonyms that can be used instead to add variety to your writing. For instance, you may use "partakes in," "engages in," "enters into," "joins in," "immerses oneself in," "takes part in," or "becomes involved in" to describe someone's involvement in something. These alternatives help convey the same meaning as "gets involved in" but with a different phrasing that can help keep your writing interesting and engaging. It's always useful to have a thesaurus handy to find the perfect synonym to suit the tone and context of your writing.