Hello aspirant. Yes, you can apply in colleges in Chattisgarh as it is an open state, meaning it allows non domiciled students to participate in its counselling process. Since you are an Andhra Pradesh domicile holder, you will have to apply under management quota (Category B), through state counselling.
The official website for Chattisgarh state counselling is https://www.cgdme.in/ You need to register yourself on the website, pay the registration fee, select and lock your choices of preferred colleges. After this, the result will be declared on the same site. If your name is in the merit list, you will have to visit the allotted college with the required documents.
The documents you require are as follows, if you manage to secure a seat-
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