What the stat panel supports

Luck points Panel value
0 ×1.00 baseline
20 ×1.60
38 ×2.14
183 ×6.49

These observations agree with 1 + 0.03 × Luck points. The Luck calculator calculates this component and its point-to-point difference. It does not turn a “1 in N” card label into a proven effective probability.

Separate sources, separate questions

Source Confirmed label What remains unproven
Lucky pass ×1.5 luck Complete stacking order with all other boosts.
VIP ×1.1 luck and daily chest Whether every reward or roll type uses the same modifiers.
Forge gear Item-specific +luck% A universal final multiplier formula.
Mastery Permanent luck bonus and next-roll milestone A fixed per-rank roll-cost curve.
Border Chance stat +Gold/Rainbow/VOID odds Exact final border probabilities.
Pets and set bonuses Luck labels in their UI Full growth and combination formula.

Do more rolls guarantee the rare card?

No finite roll count observed here is a guaranteed target-card arrival. A printed denominator and a displayed luck multiplier are insufficient to prove independence, pool weights, pity or the transformation used by the game. A generic probability formula would be mathematically tidy but could describe the wrong game model.

Increase the resource you actually lack: rolling time, packs or a gear route. For collection labels use rarities and VOID. Do not buy a pass based on an invented expected-cost-to-Secret figure.