We can't save ourselves and that Verse is about Who was chosen before the foundation of the world TO SAVE US.
NO, the below verses declare those to become saved were chosen by God before the foundation of the world BY being placed IN Christ. Their intent was NOT to demonstrate that Christ was chosen as Savior from before the foundation of the world, but rather, they're about WHO will become saved and why they will be.
[Eph 1:3-5 KJV]
3 Blessed [be] the God and Father of our Lord Jesus Christ, who hath blessed us with all spiritual blessings in heavenly [places] in Christ:
4 According as he hath chosen us in him before the foundation of the world, that we should be holy and without blame before him in love:
5 Having predestinated us unto the adoption of children by Jesus Christ to himself, according to the good pleasure of his will,
[1Co 1:30 KJV] 30 But of him are ye in Christ Jesus, who of God is made unto us wisdom, and righteousness, and sanctification, and redemption:
[2Co 1:21 KJV] 21 Now he which stablisheth us with you in Christ, and hath anointed us, [is] God;