Short term solutions:
1. Get a mentor. That gives you mentor buffs until you reach 105.
2. Go to Event NPC Lilly, the 16th Anniversary Guide in any town and get the free 16th Anniversary Happy Gift. The gift includes about 20 Emperor Special Cocktail, Rose buff and other stuff to help you level, iirc. (I don't recall if there is a level eligibility involved.)
3. Make a friend with someone who plays ISS as their main and party with them. Few do it, but worth a try.
4. Find a clan with support mates. (If you're in a clan that doesn't support you, why stay?)
5. Last resort, learn Common Buffs. Recommended only if extremely desperate AND you are rich. The problem is that each of those buffs require lots of Spirit Ore to use. Depending on the level of buff, using all of the Common buffs could cost up to 400,000 adena per 30 minute buff round. The Common Andantes only last 5 minutes, so factor that in as well. 500K+ is probably more than you make in 10 hours of grind at low levels, so again only use this option if you have a proven source of income. Even then I would consider something else.