**Prepare the Vegetables:**
Wash and chop the cherry tomatoes, cucumber, avocados, and red onion. Add them to a large mixing bowl.
**Chop the Herbs:**
Finely chop the parsley or cilantro and sprinkle it over the vegetables.
**Make the Dressing:**
In a small bowl, whisk together the olive oil, lemon juice, minced garlic, salt, and black pepper until well combined.
**Combine the Salad:**
Drizzle the dressing over the vegetables and gently toss to coat everything evenly.
**Serve Immediately:**
Transfer the salad to a serving bowl and enjoy it fresh.