the change in the interest rate by monetary and fiscal policy

It is said that the loose monetary policy will cause a decrease of the (real?) interest rate and will lead to the increase in the expected inflation (please correct me if the following logic is wrong) and thus lead to an increase in the ST and LT (nominal) interest rate but the ST interest rate will be more sensitive. For fiscal policy, it is mentioned in one of the question that a tight fiscal policy will lead to a decrease of the real interest rate (so on the contrary, a loose fiscal policy will lead to an interest in interest rate, which is actually in an opposite direction of monetary policy)?