Jn 6:44
44 No man can come to me, except the Father which hath sent me draw him: and I will raise him up at the last day.
No man can come here means no man has the ability to come to Christ. That cancels out the myth that man has a freewill,
It also means that no man has the ability to believe on Christ for Salvation. Because Christ equates believing on Him with coming to Him. Jn 6:64-65
64 But there are some of you that believe not. For Jesus knew from the beginning who they were that believed not, and who should betray him.
65 And he said, Therefore said I unto you, that no man can come unto me, except it were given unto him of my Father.
What about those Jesus says to them Jn 5:40
40 And ye will not come to me, that ye might have life.
Thats answered in Jn 6:44 they simply will not come because they cannot come unless the Power of God draws them and makes them willing
Ps 110:3
3 Thy people shall be willing in the day of thy power, in the beauties of holiness from the womb of the morning: thou hast the dew of thy youth.
If and when one comes to believe on Christ willingly, the credit goes to Gods Power !
From
New Life in Christ Jesus - Everything We Need for Life and Godliness:
Man’s singular role in salvation has always been to believe in Jesus Christ. This does not detract from God’s sovereignty. He is the one who decided, without any counsel from man, to offer Jesus Christ as the Savior of mankind. And it was solely His decision to offer forgiveness of sins and eternal life in exchange for trusting in Jesus (1 Cor 1:21). He created the paradigm, and He broadcasted it to the world. Whenever people hear His message, believe it, and respond to its call by entrusting the safekeeping of their souls to Christ, God honors His side of the bargain and saves them.
In the midst of one of the most intriguing dialogs concerning the salvation of mankind (John 6:22–71), Jesus told the crowd several important truths that confirm this paradigm.
First, He said, “No one can come to Me unless the Father who sent Me draws him” (John 6:44). Lost people do not seek after God (Rom. 3:11). Instead, God is the one who seeks out the lost to save them. And though we do have a role alongside God as His ambassadors to a lost world, we must always keep in mind that God Himself is always actively working in people’s lives to draw them to Him. God Himself is the primary one who implores them to be reconciled with Him, and no one turns to God apart from God acting upon him directly.
Second, He said, “It is written in the prophets, ‘And they shall all be taught by God.’ Therefore everyone who has heard and learned from the Father comes to Me” (John 6:45). This is an important facet of our own salvation and the salvation of every other person. Namely, when we turned to Jesus to save us from our sins, our turning was the direct result of us having heard and learned from God.
What exactly did we hear and learn from God? We heard and learned everything necessary to convince us to turn to Christ to save us from our sins. I don’t have a complete list of the particulars, but those things include the knowledge that we need the salvation that Christ offers and the understanding that Jesus has the power and the will to save us from our sins. And God does not send people to any other person for salvation. He sends them only to Jesus.
Third, He said, “The one who comes to Me I will by no means cast out” (John 6:37). This final point is the closing of the deal. When God seeks out a lost person to save him, teaches him that he needs a Savior, and convinces him that Jesus is willing and able to save him, then, when that person learns this lesson from God and turns to Christ for salvation, under no circumstances will Jesus turn him away (John 6:37). If God ever did turn one person away, He would be a liar, and His lie would be the cruelest lie ever told. But God is trustworthy and honors His promises. He has declared it, and He will not change His mind: “For ‘whoever calls on the name of the Lord shall be saved’ ” (Rom. 10:13).
If you are not a child of God but want to become one, then you should know that the path to becoming a child of God is through trusting in Jesus Christ. If God is drawing you to Him and is urging you to trust Jesus Christ with the safekeeping of your soul, then do it right now. Receive the forgiveness that God offers you in Jesus Christ. John 1:12–13 says, “But as many as received Him, to them He gave the right to become children of God, to those who believe in His name: who were born, not of blood, nor of the will of the flesh, nor of the will of man, but of God.” If you place your trust in Jesus, He will make you His child.