Yes, first check tire pressure.
Then, if pulling is consistent on right, jack up right side and see if you have anything loose on RF wheel. Grab it at 12:00 and 6:00 and shake. Then grab at 9:00 and 3:00 and shake again.
And yes, could be sticky brake too. While wheel if off ground, take note to see if brake is dragging a lot on that side (wheel should turn with modest resistance).
If looseness is found, wheel bearing could be bad.
Or you could have lower trunnion wear, worn A-arm bushings or worn king pin (common in these cars due to age).
After any worn parts are replaced, you'd need to be re-aligned (but don't waste money re-aligning a car with worn front-end parts)
Occasionally, a faulty rear leaf spring (including spring bushings or shackle) will cause pulling to one side.