You will find many lecture videos online for CLAT preparation. Some of the preferred CLAT study material are available on the below sites:

Career Launcher

Clat Possible

Law Entrance

You can even refer to some useful apps like:

Constitution of India for Legal Knowledge Quizzes

CL’s CLAT app for general preparation.

Jagran josh (GK brief points and Quizzes)

There are paid packages mostly but you can get a good amount of help from the apps mentioned above.

Good luck.