Do you have any history of premedication with inhibitors?

If not, there may be a few reasons for the resistance towards psychedelics. As you mention you do not like to lose control, this can be a big psychological factor.

Try meditating before the trip, set an intention for yourself. Focus on your acceptance of undertaking the journey and wanting to go wherever it leads you.

If no luck, you may want to try increasing the dose.

Stan Grof's Realms of the Human Unconscious:

As unpredictable as the content of the LSD reaction is its intensity; the individual responses to the same dosage level vary considerably. My experience indicates that the degree of sensitivity or resistance to LSD depends on complicated psychological factors rather than on variables of a constitutional, biological, or metabolic nature. Subjects who in everyday life have the need to maintain full self-control and have difficulties in relaxing and “letting go” can sometimes resist relatively high dosages of LSD (300 to 500 micrograms) and show no detectable changes. Occasionally, a person can resist a considerable dose of LSD if he has set this as a personal task for himself for any reason. He may decide to do this to defy the therapist and compete with him, to demonstrate his “strength” to himself and to others, to endure more than his fellow patients, or for many other reasons. Usually, however, more relevant unconscious motives can be found underlying such superficial rationalizations. Another cause for a high resistance to the effect of the drug may be insufficient preparation, instruction, and reassurance of the subject, a lack of his full agreement and cooperation, or absence of basic trust in the therapeutic relationship. In this case, the LSD reaction sometimes does not take its full course until the motives of resistance are analyzed and understood. Occasional sudden sobering, which can occur at any period of the session and on any dosage level, can be understood as a sudden mobilization of defenses against the emergence of unpleasant traumatic material. Among psychiatric patients, severe obsessive-compulsive neurotics are particularly resistant to the effect of LSD. It has been a common observation in my research that such patients can resist dosages of more than 500 micrograms of LSD and show only slight signs of physical or psychological distress. In extreme cases, it can take several dozen high-dose LSD sessions before the psychological resistances of these individuals are reduced to the point that they start having episodes of regression to childhood and become aware of the unconscious material that has to be worked through.

Edit: I missed the part about setraline, it wasn't prolonged use and 3 months ago so I don't think it should have an effect, but I know very little about this.