2E campaign in the 90s (wow, I'm old), GM ran a low magic campaign but didn't specifically say it was low magic. After a few sessions, I asked if my wizard was really a good idea. GM said be patient. Homebrew rules: wizards do not learn new spells automatically on gaining a level and spells cannot be added to a spellbook from scrolls. The rare enemy spellcasters we defeated never ever had a spellbook on their person or amongst their loot. By 4th level, everyone in the party had a +1 weapon. 2E, so wizards were limited to dagger, staff, or sling. GM said be patient. We had fun but I felt very useless. The GM gave my wizard a necklace that fired a single magic missile that could only be recharged by absorbing the souls of slain enemies. Cool, maybe turning evil will make my wizard more useful. 2 years of 4-6 hour sessions almost every week: 7th level wizard with maybe 8 spells total. 3rd level spells Dispel Magic and Slow. After countless discussions with the GM who always just told me to be patient, I decided to quit that table.
