Websites like Amazon.in or Flipkart still sell official DVDs of older Gujarati movies (e.g., Mahuva Sanam ). You can rip these for personal backup (legal gray area but generally accepted for private use).
Here are some popular Gujarati movies that you might want to consider downloading: download gujarati movies
The Rise of Gujarati Cinema: Where to Watch and Download Legally Gujarati cinema, often affectionately called Dhollywood Websites like Amazon