Hello aspirant

Hope you are doing well

Yes you can give neet exam next year too beacuse this year marks will not decide that you can sit next year or not and if you want to become doctor and you are determined so you should take drop and start preparing from today itself you should study your NCERT books and make notes which will help you while doing revision and you should solve neet sample papers and previous year papers too so you can get idea what type of questions are asked in exam and you would be aware of the level of exams

For further details you can visit the link for neet preparation tips and sample papers

https://medicine.careers360.com/articles/neet-2022

Hope it helps

Good luck