hiii ,

for jee mains & advance you can go for coaching institutes like -

• resonance
• allen
• akash
• rao iiit academy
• sinhal classes
• vidyalankar

while now you can also try online coaching institute like -

• physicswala
• vedantu
• apna college
• unacademy jee

for college through jee mains use the jee mains college predictor - https://engineering.careers360.com/jee-main-college-predictor?ici=cp-listing_engineering&icn=JEE-Main-College-Predictor