Hey Abdul R.!
A few quick things that usually help the most imo:
Filter companies first. Lock in headcount, industry, and description keywords before touching people filters. Tight accounts = better leads.
Use title keywords over the title dropdown. Typing "sales" or "revenue" with a seniority level catches way more variations than selecting exact titles.
Use the job title filter equals similar to (Your desired title) to get maximum coverage. Have attached a screenshot as well.
Seniority + department is a cleaner combo than relying on title alone, especially for director/VP level.
Don't stack too many filters at once. Start broad, pull a small sample, check quality, then tighten.
One last thing, exclude irrelevant people once you have your Persona , skim though the list and remove the irrelevant job titles to avoid spending credits/ actions on irrelevant people.
Hope it can be of some help.