"Every game is a new game," Elliott said. "We're not looking at streaks, winning streaks or losing streaks. You're looking at that next game and go out and execute your game plan.
"You have to focus on one game at a time."
Calgary has lost five of the past six games (1-4-1), and is one point up on the Vancouver Canucks for the second wild card from the Western Conference. Vancouver has two games in hand.
"We're just going to keep looking at the things we did well," Flames coach Glen Gulutzan said. "I thought we did a lot of things well tonight.
"There are some things we obviously need to improve on.
"But you keep pushing what your agenda is and what you've done well. You get what you show and we're going to keep making corrections, but also showing if we stay on this path, if we out-chance teams on a nightly basis, that we're going to turn this thing."
Rookie Mitch Marner had a goal and an assist and Zach Hyman also scored for Toronto.
The Flames surrendered the first goal for the eighth straight game when Marner tipped a point shot from Nikita Zaitsev by Elliott with 1:01 remaining in the first period.
"Someone's going to score first in most games," Gulutzan. "I thought today we came out hard. We had the better looks. We just didn't capitalize. What we need to do is stop squeezing and capitalize and just start playing.
"I didn't think that we were overwhelmed or outplayed or put out in the first period. I thought we started well, they got a bounce towards the end of the first period - went off our shin pad to a D and then a deflection in.
"That's the way the game goes. We had our looks. We need to capitalize."
Kadri doubled the lead to 2-0 seven minutes into the second period when he zipped a shot over Elliott's glove and in after second efforts from rookies Auston Matthews and William Nylander helped Toronto move the puck up ice.
Johnny Gaudreau went to the dressing room after taking a hit from Maple Leafs forward Leo Komarov at 12:36, but returned before the intermission. Komarov was not penalized on the play.
"There was no leaving the feet or anything. I understand that," Gulutzan said. "For me on the replay that I saw, and I didn't get 10 looks at it … I just had a couple at my feet … I thought it was contact to the head. But we'll see. They'll have better looks at it later."
Gaudreau confirmed he went through the NHL's concussion protocol following the hit.
"It's a part of hockey," Gaudreau said. "You're going to get hit every once in a while. With those concussion tests, they want to make sure you're alright. I had to go in there and do that and it was fine."
Hyman scored shorthanded with 3:05 remaining in the second to extend the lead to three, and Kadri beat Elliott again on the powerplay 2:21 into the third to put Toronto up 4-0 when his shot deflected off Flames captain Mark Giordano.
"That's how it works sometimes," Elliott said. "Sometimes it's deflected in and sometimes it's going out. We've got to work on keeping it out."
NOTES: Calgary finished 0-for-5 on the power play. The Flames killed three of four penalties ... Defenceman Brett Kulak played 12:07 in his first game since Nov. 27. He was recalled from Stockton of the American Hockey League on Jan. 9 ... Alex Chiasson and Dougie Hamilton led Calgary with five hits each ... Jyrki Jokipakka and Micheal Ferland were scratched against the Maple Leafs ... Forward Garnet Hathaway (upper body) remains out of the lineup.
UP NEXT: The Flames visit the Montreal Canadiens at Bell Centre Tuesday (5:30 p.m. MT; SNW, SN960).
