Did you miss the parts where he was thrown in jail (twice) for crimes he didn't commit?
Or we he had the love of his life violated by his father (twice) to prove a point?
Or when he was knocked out on the battle field (twice) the second time in a blatant attempt on his life by a member of the forces he was so valiantly leading?
Or when the love of his life got on the stand and told bold faced lies about him to the entire court to make a mockery of him (and get him convicted of murder)
Or when he was banished to cramp, dusty living quarters with no recognition after he brilliantly kept the city standing long enough for his father to swoop in and finish Stannis' forces off?
Or the Martell's straight shytting on his welcome party to King's Landing?
Or him being forced to flee his home continent in a compact crate shoving his own shyt through small holes?
Or him being tied up and kidnapped by an all-pro simp before he could finally enjoy the first proper whoring he had in months, maybe years?
Or having a dikkless dude verbally eviscerate him after his pact with the masters of slaver's bay backfired?
Tyrion took plenty of L's throughout this series, large and small...and I'm sure I'm missing some.