I'd have given my right arm to have been there with them.

要是当时能跟他们一起去那儿，我宁愿放弃一切。

《牛津词典》

I have pins and needles in my right arm.

我右手臂发麻。

youdao

I lifted my right arm.

我抬起我的右臂。

youdao

In order to get it fully healed, the only thing is to not use my right arm or hand.

FORBES: How an Injury is Sidelining Super Smash Bros. U

At dinner I couldn't use my right arm.

NPR: 'Guys Read:' Encouraging Boys to Love Books

She clasped my right side and repeatedly rubbed my left arm, murmuring into my left ear what I thought were more words of Malayalam.

BBC: NEWS | South Asia | Embraced by India's hugging saint