How to make Obstacle Avoiding Line Follower using Arduino UNO

I configured your project but the robot can't follow the path of the line like in your video. The sensors are calibrated, the led lights up when it detects the white background and turns off when it detects the dark line, the battery I'm using is 7.4 volts. Engine detection and sonar are also working. Can you help me please?

Please what could be the problem, I want to present this robot as my project

I have followed all the procedures but the motors are not working and the servo motor is the one which is rotating first

I really like your designs, could you add a claw when identifying an object and removing it from the front of the line?

i am trying this project, but my motor does not work. can you help me? i am doing my final year project