Complex sentence: A few months later, he scored his first goal in a 1--2 loss at S.C. Salgueiros, also being sent off in the 60th minute; he finished his first season with five goals in 20 games.
Split into simpler sentences: A few months later, he scored his first goal in a 1--2 loss at S.C. Salgueiros, also being sent off in the 60th minute. He finished his first season with five goals in 20 games.