For your total costs (tuition, fees, housing, meals, travel, books, other materials, personal expenses, etc.) to come in under $30,000 a year, you will need a significant scholarship or you need to find a place where your tuition and fees are no more than $15,000 a year. Yes, you need to have at least $15,000 for housing, meals, travel, etc.
You might be able to spend less than that, but you are international, and there is no easy prediction right now for your travel costs.
College Navigator finds 56 colleges and universities with some kind of bachelor degree in theater/acting/performing arts with tuition and fees for out-of-state students of $15,000 or less. https://nces.ed.gov/collegenavigator/?s=all&p=50.0506+50.0501+50.0599+50.0509+50.0101+50.9999&l=93&ct=1+2&ic=1&tx=15000&ts=-2&hs=1&pg=1 You can play with the search factors a bit more, but it also wouldn’t take all that long to click through this list. The only two on this list that I know anything about are Brigham Young University (very strong performing arts program, but not a good choice for a student who is not already a member of the Latter Day Saints church because of the heavy religious focus of the university) and Western Illinois University (solid regional theater program that students from my home town often enroll in).
It also is important for you to remember that what you think your family can afford and what a college or university thinks you can afford are likely to be two very different things. Meets full need doesn’t always mean that what you think your full need is will be met. There is no easy way for you to estimate aid because the Net Price Calculators at the college and university websites aren’t accurate for international students. So do get some advice from the people in the Theater Majors sub-forum, but don’t expect a miracle.
What might work for you financially would be a place like University of Alabama that awards automatic admission and automatic merit even to international students who have specific grades and GPAs.