The Hebrew Bible teaches that, although the people of Israel often fell short of fulfilling their end of the agreement made at Mount Sinai and, in effect, broke the covenant, G-d has stated on many occasions that He will not break His covenant with Israel:
Leviticus 26:44-45 – (44) And despite all this, when they are in the land of their enemies, I will not despise them nor will I reject them to annihilate them, thereby breaking My covenant with them; for I am the L-rd their G-d. (45) And I will for their sakes remember the covenant of their ancestors, whom I brought out of the land of Egypt before the eyes of the nations, to be a G-d to them; I am the L-rd.
Judges 2:1 - And an angel of the L-rd came up from Gilgal to Bochim, and said [in G-d's name], "I will bring you up from Egypt, and I have brought you to the land which I swore to your forefathers, and I said, 'I will never break My covenant with you.'"
Ezekiel 16:59-60 – (59) For thus said the L-rd G-d [to Jerusalem]: "I have done with you in accordance to that which you have done, that you have despised an oath in breaking a covenant. (60) Nevertheless I will remember My covenant with you in the days of your youth, and I will establish with you an everlasting covenant.
Psalms 105:8-10 – (8) He has remembered His covenant forever, the word which He commanded to a thousand generations. (9) That which He had made with Abraham, and His oath to Isaac; (10) And He established it for Jacob as a law, and for Israel as an everlasting covenant;
You have stated your opinion- but scripture says you are wrong. God's covenant with Israel is eternal and so is His Torah.