What country are you in l, I know in UK they like to hand out enclo for TRT apparently so that's why I'm asking. My suggestion would be don't use a serm for TRT, get a different doctor and address why your testosterone might be low, see if it's hypogonadism or if it's low for other reasons, and see if it can be fixed through lifestyle factors and supplements.
If not, get on a real trt protocol with test gel or injectable testosterone.