First, let's talk about the best sports betting sites with free bonuses. Here are the top 5 sites we recommend:

1. 4️⃣ Bet365 - Bet365 offers a welcome bonus of up to R$ 200, which is one of the highest bonuses available 4️⃣ in the market. The bonus code is BEMVINDO365.

2. Betfair - Betfair offers a welcome bonus of up to R$ 100, 4️⃣ with a low turnover requirement. The bonus code is BETFAIR100.

3. Sportingbet - Sportingbet offers a welcome bonus of up to 4️⃣ R$ 150, with a straightforward sign-up process. The bonus code is SPORTING150.

4. Betmotion - Betmotion offers a welcome bonus of 4️⃣ up to R$ 200, with a wide range of sports and markets available. The bonus code is BETMOTION200.