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Solo diving can be a great pleasure. However, I see that you only have less than 100 dives. Are you sure you are ready for solo diving? Maybe your instructor cussed you out for good reason. Knowing nothing of your skills or experience, I can't make that decision for anyone else.
Other than proper equipment (redundant air supply and other equipment), the most important factor in deciding if you are ready for solo IMHO is how you react to emergencies. If you have not experienced such incidents, you probably don't know that yet. However, your fear of sharks does suggest that you might not have the calm response necessary when a hose blows or you get entangled.
Think long and hard about it. If you choose to continue solo diving, be safe and enjoy it.