Unknown Little Killers: Irregular Sudoku Beauty

Today's Puzzle:

A tricky little puzzle, but once you find the break-in, it flows very quickly!

Link to Play Along:

Unknown Little Killers by GBPack https://tinyurl.com/SudokuSleuthUnknownLittleKill

Rules:

1) Place the digits 1-6 in each row, column, and region (digits do not repeat in a row, column, or region)

2) Digits along indicated diagonals sum to the number given. A ? represents a single digit from 0-9. (The leading digit of a two-digit clue may not be zero)