2002 Hyundai Accent overheating

Hi While driving I came to know car is getting hotter. Then I stopped and check for coolent it was dried up also checked for engine oil it was full then I was asked to put some water in coolent container and then I drive it for 10min then engine stopped and I put coolent in it. Then I drove back home. After 10 min it got hot again. Then for oveernight it was idle next day I drove it for 15 min it was between C and H. Then third day I drove the car after 10 miles on highway it was normal but when I drove it bumper to bumper for another 10 min it it got hot again. Then I let it cool again and now I was asked to fill water in radiator so almost 4 litre water is filled in radiator and now engine oil level is also showing low so what exactly could be the problem.