Some thoughts:
Single handers are in the minority. Female single handers are an especially rare species, but we do exist. No sure about gay single handers, but trailblazing is always a good thing.
If you get to a narrow bit, you can just power through with your fingers crossed and a clean pair of underwear at the ready, or if you have time, you can wait for another boat and follow them through. This approach is good for wide locks, which you can share with another boat, and swing/lift bridge where you can sneak through behind.
Many other boaters and gongoozlers will offer help to single handers at locks, which is nice, and can be a real help, but remember it's your boat and you're in charge. If people aren't helping in a way you're comfortable with - tell them.
I quite like travelling very early in the morning or late in the evening when there are fewer people about, I can take my time and do things my own way.