Uruguay beat Saudi Arabia 1-0 in their Group A match on Wednesday and secured their place in the round of 16, before their third group game against hosts Russia, who are also in the next round.
"We are not fully satisfied with how we are playing at this World Cup. We have achieved a good result and have got past the group, but there are still some things we need to improve. We didn't play today as we wanted. But we can be proud that it's the third World Cup in a row where we have reached the knockout stage," Suarez told journalists.
The team faced Egypt in their first match and defeated the opponent 1-0 on Friday