@rdwins, you can get those missing parts through Amazon, eBay or AliExpress, among others. Do a search for "iPhone 11 small parts" and you'll come up with plenty of options; just find the one that works for you. Here's one of the first ones that came up for me; it should have your missing parts.
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[link|https://www.amazon.com/Replacement-iPhone-Including-Internal-Bracket/dp/B08QN2KQG6/|Amazon.com: Inner Parts Replacement Kits for iPhone 11, Including Internal Bracket Replacement Parts, Full Screw Set and Repair Tool Kit (for iPhone 11) : Cell Phones & Accessories|new_window=true]
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[link|https://www.amazon.com/Replacement-iPhone-Including-Internal-Bracket/dp/B08QN2KQG6/|Amazon.com: Inner Parts Replacement Kits for iPhone 11, Including Internal Bracket Replacement Parts, Full Screw Set and Repair Tool Kit (for iPhone 11) : Cell Phones & Accessories]
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Edit: I think the part @strongbow is referring to is that little pin on the top side of the connector on the right. I've added a picture with an arrow pointing to the part that looks misaligned or bent.
@rdwins, you can get those missing parts through Amazon, eBay or AliExpress, among others. Do a search for "iPhone 11 small parts" and you'll come up with plenty of options; just find the one that works for you. Here's one of the first ones that came up for me; it should have your missing parts.
[link|https://www.amazon.com/Replacement-iPhone-Including-Internal-Bracket/dp/B08QN2KQG6/|Amazon.com: Inner Parts Replacement Kits for iPhone 11, Including Internal Bracket Replacement Parts, Full Screw Set and Repair Tool Kit (for iPhone 11) : Cell Phones & Accessories|new_window=true]