There are two reasons for this: The first is that an expansionary interest rate policy, i.e., a reduction in the interest rate, tends to have a positive effect, mainly on GDP, and only later does it lead to inflation, and since governments in democracies generally have a short-term horizon, this leads to a preference for interest rate reductions.
In short, we must deepen those policies that enable us to face changes in the external context and, in turn, to develop our economic institutions so as to better channel benign scenarios and improve the power of our monetary policy instruments, with the aim of being fully responsible for the achievement of the objectives set and, thus, being able to set more ambitious goals.