hello samkar,the decision of choosing college or coaching depends upon what yu want to pursue,

but i would suggest you to opt for college as if u are preparing for any higher exams like UPSC,ca,cs,pssc,cds,or others which can make up your carreer then the graduation degree is  must, and majorily everywhere the degree is must to achieve good ..

and coming to the part of u iopting for any college realted exams lke jee advnce,neet,clat, or exams like nda so I would suggest u to take drop and opt for coaching if u can manage 1 yr drop.

as coachng will provide u an perfect atmoshphere of competion and u can focus on your future and it will surely result sweet..

Hello Samkar,
It's all depends upon you. If you think that you can do better if you go for coaching then you should go for coaching after that you can join better college. If you have achieved good rank/marks this year and you have good option available then no need to join coaching.
Good Luck