SSRI didn't work for me, so tried lorazepam.
There are other antidepressants, SNRIs, tricyclics, MAOIs, etc. What SSRIs have you tried, for how long and at what dose?
Helped panic and anxiety, however can't take during day due to drowsiness.
Tolerance to the sedating effects of benzodiazepines (BZDs) usually diminishes when they are taken daily for a few weeks.
But I am worried about dependence
You will probably become dependent if you take BZDs daily for a month or two. You would also become dependent on antidepressants and in both cases need to wean off them instead of quitting 'cold-turkey.'
The problem isn't that BZDs cause dependence, but that doctors are increasingly reluctant to prescribe them which makes them a risky daily treatment. Antidepressants or therapy are better long term bets with BZDs best reserved for occasional breakthrough anxiety, or to help ease you through the initial antidepressant side-effects.