Manchester United have struggled to find the net this season, particularly at Old Trafford, where they have drawn five of their last six Premier League home games.
Jose Mourinho's side have been heavily reliant on Zlatan Ibrahimovic, who now has 27 goals in all competitions this term.
And United legend Giggs believes United need to start scoring goals from all over the field.
Ryan Giggs wants Jose Mourinho's Manchester United to score more from all over the field
"They’re getting in those positions, but it’s concentration when it falls for you," Giggs told the Daily Mail.
"Jose’s said it, hasn’t he? It’s frustrating. You’re dominating games and have so many draws. You look up and it’s like ‘what could have been?'
"There’s luck too. Pogba’s hit the bar nine times. If he scores those then he’s got 15. It’s that, it’s confidence – all of those need to come together.
"You can’t just rely on one person because they can have an off day. Leicester last year. OK, Jamie Vardy scored a lot of goals, but Riyad Mahrez got 17. That’s what you need.
Manchester United wages: Which Red Devils star earns the most?
Thu, April 6, 2017
Express Sport runs through how much each Manchester United player earns per week, according to Total Sportek/Sky Sports News
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Zlatan Ibrahimovic is United's top scorer this season with 27 goals
"That’s how the United teams I played in were like.
"I’d chip in with seven or eight, Becks would, Scholesy would. Four centre forwards would. The centre halves. Denis Irwin too. The goals came from everywhere.
"You only have to look at Liverpool. I questioned them — they've not got a centre forward who can score 20 goals.
"But they just come from everywhere and they are the leading goalscorers. That's what United need to get back."