Coming when called is one of the most useful skills a dog can learn. It takes time and practice, and no recall is guaranteed in every situation, so training should always be paired with sensible management and a secure environment.
Choose one clear cue and begin somewhere quiet. Say the cue once in a cheerful voice, move away a few steps, and reward your dog generously when it reaches you. Use treats, play, praise, or another reward your dog genuinely values.
Practise in short sessions and gradually add distance and distractions only when your dog is succeeding consistently. Never call your dog to punish it, and avoid scolding it for taking time to return; that can make coming back less appealing.
Use a long training line in open areas until the behaviour is dependable, and keep your dog on a lead near roads, wildlife, livestock, or other hazards. If recall is difficult, a qualified reward-based trainer can help tailor the plan to your dog.