John Chrysostom

But if His miracles raised their wonder, why did He not work many? Because He looked not to display of Himself, but to what would profit others; and when that did not result, He despised what pertained only to Himself that He might not increase their punishment. Why then did He even these few miracles? That they should not say, We should have believed had any miracles been done among us.

Catena Aurea by Aquinas ↗

Jerome

And he did not do many miracles there because of their unbelief. Not because he was unable to do many miracles for them, who were unbelieving; but rather because in doing many miracles he would condemn the unbelieving citizens. It can also be understood in another way, that Jesus is despised in his own home and country, that is, among the Jewish people. And therefore, he performed only a few signs there, so that they would not become completely without excuse. …

Commentary on Matthew ↗

Thomas Aquinas

Hence it follows: and he did not work many miracles there; not because he could not, since he was omnipotent, but he did not, because the purpose for which he worked miracles was that they might believe in him. But they held him in contempt, because they interpreted things in a bad sense, and therefore they were not disposed to faith: yet he worked some, so that they might be rendered inexcusable; and therefore he says not many, because he worked some. And this was on account of their unbelief.

Commentary on Matthew ↗