Im new here! Any tips to improve at chess?

Seeing no one still didn't get the answer... I'll explain why it isn't what you guys thought: - ❌ Hikaru Nakamura: Reached World No. 2 and never became World Champion, but he has never lost a World Championship match after leading by two points. - ❌ Fabiano Caruana: Reached World No. 2 and played a World Championship match, but the score was tied throughout the classical games. - ❌ Akiba Rubinstein: One of the strongest players never to become World Champion, but he never lost a World Championship match after leading by two points. - ❌ Ian Nepomniachtchi: Lost two World Championship matches, but not after leading by two points. Bonus Hint This grandmaster is from Hungary, and the World Championship match in question was against Veselin Topalov. That should narrow it down considerably.

Game #5 Difficulty: ♕ Queen Objective: Find the 2 lies. There are 10 options. 1. A promoted rook has the same legal moves as an original rook. 2. A player may have three bishops on the same color squares after promotions. 3. It is possible for both kings to be in check simultaneously in a legal position. 4. Checkmate always ends the game immediately. 5. A knight can legally move to a square occupied by one of its own pieces. 6. A player may underpromote to avoid. 7. A move can simultaneously give check and create a threat of promotion. 8. A queen can pin a knight. 9. It is possible for a legal position to contain four white bishops. 10. The side to move can never already be in checkmate. There are exactly 2 lies. Find them.