The Dutchman, who has struggled in his second season at Old Trafford, suffered a painful 3-1 defeat at rivals Manchester City last week as he brought up a century of matches in charge.
Ten Hag had to field a patched-up team against the Premier League champions and United will again be without a host of first-team players for Saturday's clash with relegation-threatened Everton.
Marcus Rashford and Jonny Evans have been passed fit after coming off in the Manchester derby but Omari Forson has joined the injury list. Ten Hag won the League Cup in his first campaign and led the side to third in the Premier League but this season they are sixth, 11 points off fourth-placed Aston Villa with 11 games to go.
Defeat in next weekend's FA Cup quarter-final against Liverpool would end United's last remaining chance of silverware. Injuries have played a key role and without such issues the Ten Hag believes he would have won far more than 61 of his first 100 matches.
"It tells that we are in the right direction," Ten Hag said on Friday of his win ratio. "So, imagine if we had many more players available, not so many setbacks in injuries, it could have been easily 70 or 75 wins and that tells the bright future of this team when players are available.
"Because if you compare it, you compare it with other managers or other teams who were in a build-up stage, or with previous managers in this big club, then you can see there is a bright future. Also, I think it's a good balance in ages in this squad, with young players, middle-aged players, experienced players together.
"Imagine when they are available. As I said, we could have won 75 from 100 games and that's a big difference."
Lisandro Martinez, Anthony Martial, Luke Shaw and Tyrell Malacia are
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