For iPad 7th gen users: lightning to USB Camera adapters

Hello iPad users.
So I bought my iPad 7th generation some three months ago (and I came from an iPad 2 prior to this upgrade haha)
Has anyone of you ever tried using a lightning to USB camera adapter for the iPad? I have seen videos of users who bought just the plain USB camera adapter and has encountered error notif saying that “the device uses too much power”. This has made me doubtul of which one I should get – cause there are two kinds of USB adapters. Planning to use this device for file transfers, mouse and probably game controllers.
Any thoughts, recommendations, or suggestions are welcome. Thanks!
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