I feel I hit the universal lottery when it comes to online dating, but as mentioned, just be yourself and don't expect anything and you might be surprised. Best case, you find your partner and love of your life. Maybe you'll find some people that you enjoy their company for a while and find yourselves incompatible in the long run, but remain friends.
My experience was that I was looking for friendship and people that I could connect with, and I made that well-known. I wasn't looking for anything serious at all, let alone a husband. But life is full of surprises.
Seek friendship, and who knows what will happen.