Yes, God understands your problem; after all, He made you and He knows all about you (including both your strengths and your weaknesses). The Bible says, "For he knows how we are formed, he remembers that we are dust" (Psalm 103:14).
And I want to assure you also that God doesn't hold you accountable for things you simply cannot do. We are all different; God has given each of us different abilities and gifts, and we can't all do the same things equally well. The key is to discover the gifts God has given you, and then to use them to their fullest for His glory. In other words, don't worry about the things you can't do; focus instead on the things you can do - and ask God to help you do them well.
At the same time, don't forget why the Bible is important to us. The Bible is God's Word - and God wants to use it to teach us about Himself and to change us into the people He wants us to be. Have you opened your heart and life to Jesus Christ, and are you asking Him to change you and use you?
If not - or if you are unsure of your relationship to God - ask Christ to come into your life today. Then ask Him to help you learn more about Him and His love for you. For example, before you go to church each week, ask God to speak to you as your pastor preaches from the Bible. Don't give up on your own Bible reading either; God can use even a few sentences to help you.