Your marks cannot define what capabilities you have.I have witnessed one such incident in which one of my friend got failed in class 12 but later or with hardwork and his strong determination to do chase his dreams,he learnt Digital Marketing on his own from online course platforms and right now he is a intern in a good company in Digital Marketing field.
Never get demotivated,find out you capabilities and work on them to be a better version of you everyday.
As you have passed 10th standard , then you can do Diploma courses in computer,mechanical,electrical or civil field.These have good placements and 10th pass students can apply for these courses.
As you have cleared 10th class , you can do Diploma in Aviation course for chasing your dream in airlines.
Hope this helps
Wish you good luck