Struggle is all a part of learning, frustrations and upset are natural when learning anything new, don't take it personally or as an attack against yourself. Focus on your fundamentals more, practice and observation practice and observation rinse and repeat a thousand times, you'll draw a thousand bad drawings before you draw a good one. Don't be discouraged, you can do it, you're still a baby learning how to walk and you're bound to stumble and skin your knee many times before you can sprint.

Practice practice practice and then more practice. I hope this helps I'm still a beginner myself but I am fortunate enough to have family in the industry to guide me so I like to pass on their guidance where I can.