now a days, theres no such thing as "low range for your lvl". Some level 200s have 12mil range, some have 2mil range, some have 200k range. Just focus on funding your class since there is no solid average range
For my p2w account I basically bought cubes to increase range (i.e. buying cubes on miracle time to get range up to 2m). On my f2p acc I used the f2p features such as star forcing, spell tracing, and cubes from bosses to increase my range to 400k clean. Unfortunately investing in cubes is prob the biggest way to increase range.