Hi, Ahmed. I've made corrections, and added comments on your writing. :) Options at the end!

Due to my job, I have limited free time [for what?, and writing with a "what is, instead what is not" approach gives focus for the mind, so write with describing with what you do have and can work with/grow, in the future, ok? :) ]. Therefore, I recently started to try manage my time more effectively between my job, my social life, and my free time [or hobbies ] [time management is a concept that you do not create, but a system you implement or use, so bring the concept into an action/workable/descriptive form, which you can do, have done, will do. Note that it appears that you have not yet supported your text/statement with HOW (and/or why) you have improved / implemented your time management, at the right place. ]. I spend my free time on two activities: reading novels and learning English [you don't need to add 'language'  - people know that English is a language already, so no need to state the 'obvious' :)]. I like reading thriller and mystery novels, as they take me on a journey of suspense, excitement, and imagination [I've moved your split sentences - say what you like to do, and then how/why, to justify your statement of, "I like thriller and mystery novels", ok?]. For learning English [taking this away "My second free-time activity is" because you already said that you there are two activities], I read articles and novels, watch movies with English subtitles, listen to English songs, do [or take or perform - otherwise it sounds like you are creating grammar test for others to do. You could be. Are you?] grammar tests through some apps, and practice writing on the Italki app. Knowing English is very important in my job, as it helps me to engage [or interact] with people effectively [or convincingly/successfully]. I encourage my children to learn English, so they are registered for [or on or signed up for ] an English course.

1. Due to my job, I have limited free time. Therefore, I recently started to try manage my time more effectively between my job, my social life, and my free time. I spend my free time on two activities: reading novels and learning English. I like reading thriller and mystery novels, as they take me on a journey of suspense, excitement, and imagination. For learning English, I read articles and novels, watch movies with English subtitles, listen to English songs, do grammar tests through some apps, and practice writing on the Italki app. Knowing English is very important in my job, as it helps me to engage with people effectively. I encourage(d) my children to learn English, so (now) they are registered for an English course.

2. Due to my job, I have limited free time for my hobbies. Therefore, I recently started to try manage my time more effectively between my job, my social life, and my hobbies. I spend my free time on two activities: reading novels and learning English. As I like to be taken on a journey of suspense, excitement, and imagination, I like reading thriller and mystery novels. My other free-time activity is learning English; I do this by reading articles and novels written in English, watching movies with English subtitles, listening to English songs, doing grammar tests through some apps, and practicing writing on the Italki app. Knowing English is very important in my job, as it helps me to engage with people effectively. I encourage my children to learn English, so they have been registered for an English course.

Due to my job, I don't have enough free time. Though, Recently, I am trying to make time management between my job, my social life and free time of myself. I spend my free time in two activities : reading novels and learning english language. Reading novels take me on a journey of suspenseful, excitement and imagenation. I like thriller and mystery novels.The second free time activity is learning english. I am trying to learn it by reading articles, novels, watching movies with english subtitle, listening to english songs, making grammar tests through some apps and writing practice on Italki app. Also english language is very important in my job and helps me to deal with people. I encourage my children to learn it. They take an English Course.

Due to my job responsibilities I don't have enough free time. Recently, I have been trying to manage my time between my job, social life, and free time. I spend my free time by either reading novels or learning the english language. Reading novels takes me on a journey of suspense full of excitement and imagination. I like thrillers and mystery novels. My second free time activity is learning english. I am trying to learn english by reading articles and novels, watching movies with english subtitles, listening to english songs, making grammar tests through certain apps, and practicing writing on the Italki app. The english language is very important in my job as it helps me deal with people successfully. In addition, I encourage my children to learn english. They are enrolled in an English course.