Here are some ways to earn in-game credits and gold without paying: 1. **Participate in daily missions and UGR**: Actively participate in daily missions and UGR in the game to earn rewards. You have a chance to earn credits from these activities. 2. **When using credits and gold, focus on where you need them. It is important to avoid waste and use them efficiently. 3. **Challenge free races and events**: Participate in free races and events in the game, win, and earn rewards. You can earn credits and gold from these activities as well. 4. **Watch ads**: You can earn rewards by watching ads provided in the game. Actively watch ads to earn credits and gold. By combining these methods, you can effectively earn in-game credits and gold without paying.