The people of God are in no way chosen based on anything good that He sees in them. This decision is simply based on God's good pleasure. These are the ones which were chosen before creation to be His prized possession. They are the ELECT which are often spoken of in scripture.
The Canons of Dort truthfully states the following:
Election is the source of each of the benefits of salvation. Faith, holiness, and the other saving gifts, and at last eternal life itself, flow forth from election as its fruits and effects. As the apostle says, He chose us (not because we were, but) so that we should be holy and blameless before him in love (Eph. 1:4).
Paul was distinguishing two different groups of people in Romans.
The Jews and the Gentiles.
The Jews were grafted out and the Gentiles were grafted in.
Paul was never discussing individual election in Romans and that's where everyone goes wrong.
Here are a few verses from Romans 11.
21 for if God did not spare the natural branches
(Israel), He will not spare you (
Gentiles), either. 22 Behold then the kindness and severity of God; to those who fell, severity, but to you, God’s kindness, if you continue in His kindness;
otherwise you also will be cut off.
25 For I do not want you, brethren, to be uninformed of this mystery—so that you will not be wise in your own estimation—
that
a partial hardening has happened to Israel until the fullness of the Gentiles has come in.
30 For just as you once were disobedient to God, but now have been shown mercy because of their disobedience,
31 so these also now have been disobedient, that because of the mercy shown to you they also may now be shown mercy.
32 For God has shut up all in disobedience
so that He may show mercy to all.
There is no individual election in chapter 11 of Romans and not a single thread to weave.