Hi Manjari,

On 77 marks in TS ICET 2019, your expected rank will be somewhere around 12500 to 13500. Based on this, your probable colleges are: 

• PB (Parvathaneni Brahmayya) Siddartha College of Arts & Science PG Studies 
• Yogi Vemana University
• Sri Vidyaniketan Institute of Management
• Andhra Loyola Institute of Engineering And Tech
• CMR College of Engineering & Technology 
• Vardhaman College of Engineering  
• Malla Reddy Engineering College 
• Kakatiya Institute of Technology & Sci
• Sardar Patel College
• Vishnu Institute of Technology
• R B V R R College For Women
• Avanthi Degree & PG College 

Hope this helps. All the best.