Hello Marco,

With 57 percentile in JEE mains with ST category you might possibly get into following colleges:

• Ujjain Engineering College, (Formaly Govt. Engg. College Ujjain(UEC) 
• Madhav Institute of Technology and Science, Gwalior 
• Shri Ram Group of Institution 
• Shri G.S. Institute of Technology & Science, Indore (M.P.)
• Sagar Institute of Science Technology & Research, (SISTec-R),Bhopal 
• Indore Institute of Science & Technology, Indore 
• St. Aloysius Institute of Technology, Jabalpur 
• Rewa Engineering College, Rewa (REC) 
• Institute of Peoples Science and Technology, Chitrakoot, Satna

You can find out more collegesbased on your jee mains is performance using the careers 360 JEE mains college predictor tool:

https://engineering.careers360.com/jee-main-college-predictor

All the best