Bale has been targeted by disgruntled Real fans as the club have crashed out of the Copa del Rey and Champions League and been left trailing in La Liga by leaders Barcelona in recent weeks.
Team-mates Marcelo and Thibaut Courtois also complained of Bale failing to interact with the Real dressing room by not speaking Spanish and choosing to go to bed early rather than meet up with the rest of the squad for an evening meal.
The return of Zinedine Zidane as manager may also make the situation more difficult for Bale, as it is understood the two men did not have a great relationship by the time the former France World Cup winner left Real last June.
Bale is currently nursing an ankle injury suffered on Champions League duty, but Giggs is confident that he will have recovered in time to play in Wales’ opening Euro 2020 qualifier against Slovakia on March 24.
“He’s an experienced player. He’s a quality player and a quality person,” Giggs said after naming a 31-man squad for a Wrexham friendly with Trinidad & Tobago on March 20 and the Slovakia game in Cardiff.
“I expect Gareth to turn up and do what he always does, give everyone a lift.
“When he plays for Wales, he gives 100 per cent and more often than not he performs well. I don’t expect anything different because he’s always brilliant around the camp.”
Bale has won four Champions League titles during his six years in Spain and Giggs says the forward has proved he is strong enough to handle any flak that comes his way.
“I played for United and you are open to criticism when you are at a big club,” Giggs said.
“Everyone has had it. The two Ronaldos had it out in Madrid, Gareth has had it.
“You have to put up with that, just like you have to put up with all the adulation when you win leagues and Champions Leagues. It comes with the territory. So you have to take the rough with the smooth.”
Wales have lost Aston Villa defender James Chester and Leicester midfielder Andy King to injury and handed a first call-up to Rotherham midfielder Will Vaulks.
Vaulks, who has played for Tranmere, Workington and Falkirk, was born in Wirral and qualifies for Wales through his mother.
“It’s been an interesting journey for Will,” Giggs said.
“Released by Tranmere, he was in the system in Wales at 15, 16, then went up to Scotland and came back down to England and is now captain of Rotherham. It’s a fantastic story and just proves never give up.”
Giggs confirmed that Ashley Williams will remain Wales captain for the forthcoming European Championship campaign.
The 83-times capped central defender, now 34 and on loan at Stoke from Everton, has worn the Wales armband since 2012.
“He will be the captain as long as he is in the squad,” Giggs said.
The German goalkeeper joined from Liverpool on a two-year loan deal last summer and has struggled ever since his shocking display against Real Madrid in the Champions League final.
The 25-year-old was jeered by home supporters after he failed to make a routine stop to Omer Ali Sahiner’s equaliser on Sunday for Konyaspor.
And Gunes admits the goalkeeper is a problem for his team, saying he would prefer to use 35-year-old deputy Tolga Zengin if he were available.
“He was at fault for the goals he conceded,” Gunes said.
“Karius has gone a bit stagnant, something is wrong with his electricity, motivation, enthusiasm for the game.
“It has been like that since the beginning. He does not really feel a part of the team, it’s something we haven’t been able to work out and, of course, I am partly to blame for this.
“Something is wrong, he has also been unlucky. [He] is talented but it hasn’t worked out and we have a problem.
“Let me put it this way, if I still had Tolga available I would play him.”
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