Given the difficulties in following the Imam, challenges in reciting important Duas, discomfort with varying practices, and distractions during audible recitation, is it permissible for me to perform Farz Salah at home to enhance its quality and focus?
Performing Salah with the congregation has great importance in Islam and the reward of Salah with the congregation can not be compared with Salah individually at home. If you feel that praying at home makes you focus more, you can do so in recommended Salah which is double the number of the daily obligatory Prayers. Daily obligatory Prayers are 17 Rak'ats, while the daily recommended Prayers are 34 Rak'ats. It is mentioned in many authentic Hadeeths to perform recommended Prayers at home and perform the daily obligatory Prayers in the Masjid with the congregation (Jama'ah).
Wassalam.