car cranks but wont start

What is your question?

i g0t up 0ne m0rning and was ab0ut t0 leave my pad but when i begin t0 start my car it w0nt start. My br0ther 0il change and filter change the car 2 days ag0,but n0w the car cranks but w0nt start..i already checked the battery and recharged it, still w0nt start, I als0 checked all the wirings till w0nt start.what seems t0 be the pr0blem and why w0nt it start?