What were the most difficult times of Leonardo da vinci?

Leonardo da vinci faced several challenges throughout his life, particularly during his early years in Florence, where he struggled for recognition in a highly competitive artistic environment. His later years in France were marked by health issues and the burden of unfinished projects, which caused him frustration. Additionally, his relentless pursuit of knowledge often led to financial instability, as he invested time in diverse interests rather than solely focusing on lucrative commissions. Despite these difficulties, his resilience and curiOSity ultimately solidified his legacy as one of history's greatest polymaths.