ESV - 26 And he answered, "It is not right to take the children's bread and throw it to the dogs.
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As Jesus was beginning His ministry, His focus was on the people of Israel. In context, the woman asking for help from Jesus was a Gentile. The "children" were Israel. The "dogs" are all Gentiles. He used this encounter to show His mission to offer God's salvation not only to the "children" but also the "dogs" who have faith and believe.
If you have faith to believe Jesus died to pay for your sins, and that He rose from the grave to defeat death and give eternal life in heaven, you can receive this wonderful gift.