So sorry to read this. The good news is you can repeat it. You will take it in Septemeber, not terribly late, and by that time you will be able to do well. This test experience helped you know what to expect next time.
You have 3 months to prepare. Now you know, what to do to make it right this time.
Take 1-week break and come back fresh and ready! You can do it, no time for regrets and what-ifs.
PS: Even on your breaks read 5 Scientific American articles every freaking day! Subscribe to SA magazine website I think I paid 36 dollars and go access to 4 years in their archive, I read every day now. I used to read novels, but now I read articles. (Also, the economist have a good a deal 12 dollars subscription for 3 months. You can access their articles online, they even have audio with their articles if you read them on your smartphone. Very good writing and information and they even h a science section. )
English is your second language and The RC section pretty hard for even some natives, so the only way to improve it is by exposure and consistency.
Math is learnable you can improve it with algebra for dummies (name of the book) and gre math books ( manahattan books are good )
You need to subscribe to a lot of dat practice tests websites to practice timing for RC section and QR, Pat as well will get better by time.
Your science scores are ok, but you will improve them by watching Mike videos for chem and Ochem with chads again.
Bio, watch youtube videos for now and read cliff book and the notes made avaiable on Bootcamp.
Of course you need to do destroyer again after you review the materials.