There is not much difference between Engage in and be engaged in. There are roughly three points: (1) Engage in is the active voice: be engaged (in) is the passive voice. (2) Engage in means to be busy. When expressing, you must have in to add the object. engage in politics. Engage with en ˈgage with [transitive] [present tense i/you/we/they engage with he/she/it engages with present participle engaging with past tense engaged with past participle engaged with]. The two phrases Engage in and be engaged in have significant differences in English, reflected in their meaning, usage and emphasis. First, in terms of meaning: engage in: This phrase mainly refers to participating in or investing in something.
Omegle Talk to strangers! by Battly on DeviantArt
