There was a deleted question earlier this week asking about the parameters of spreading out one's hands in prayer, something which was very common in Tanach as part of prayer (e.g., Shemos 9:33). When is this permitted/recommended, if ever? What would be the rationale for limiting it?
I haven't learned through it yet, but just today I came across a פחד יצחק פורים סימן לה who discusses this Rav Akiva Eiger, presumably from a השקפה angle. It is not available on HebrewBooks but at the moment it can be read for free at https://beta.otzar.org/#/b/147108/p/81/t/16440.4141604144245259/fs/0/start/0/end/0/c/1646162172337
See Shlomo Hamelech's prayer, that Hashem should answer non-Jews who spread their hands and come all the way to the Beis Hamikdash.
Implying that Jews don't need neither this nor that, we don't need to raise our hands (perhaps in a sort of desperate despair) nor even wait till we get to a holy site - G-d will answer us everywhere we are.
I have seen people raise their hands in prayer and I have never heard that it is wrong, but it is the quiet confidence of Shevach - Bakasha - Hoda'ah that is the usual signature of Jewish prayer.