Firstly, the Lord's Prayer is an example where Jesus is expressing to His disciples to keep their prayers simple. Secondly, what they didn’t seem to understand was that just simply talking to Him was a prayer. Prayer is as simple as going to a friend at midnight and asking for the loan of three loaves of bread (Lk. 11:5–13). We can approach our Heavenly Father, the Holy Spirit, and Jesus our Saviour in the same manner. Elaborate or fancy words will not give you more favour and can make prayer complicated. That is why so many people tend to shy away from praying.
When you pray, just use your own words to tell Jesus what your needs are and He will hear you (Phil. 4:19). Jesus always answers prayer (Jn. 14:4; 15:16; 16:23-24). Think of prayer as talking to a friend who loves you. When you pray, remember to keep it simple, using your own words. Jesus said, “Ask, and it will be given you; …for everyone who asks receives… If you being evil, know how to give good gifts to your children, how much more will your Father in heaven give good things to them who ask Him?” (Matt. 6:7;11).