Sorry if it sounds harsh, but it's said with good intentions.
You need to stop this narrative of self pity. You are putting having a relationship on a pedestal and making it out to be a prize that defines happiness in your life. This unfortunately is counter productive to your finding and having a good relationship. In your whole post, the only thing that is a negative is the lack of a relationship and you are letting that convince yourself that your life stinks.
Let's look at some positives, shall we? You are healthy. You are gainfully employed when so many others have lost their jobs You are relatively young and attractive. You have no trouble finding dates or being able to go out on them Yes, the pandemic is tough but the worst is hopefully behind you where you live You are not a high risk person such as old or one with a compromised immune system You don't have to worry about food, shelter or security You have a wonderful daughter who loves you You have a dog who loves you and will love you unconditionally You live in a first world country where inspite of all the positives, you can convince yourself life stinks
Happiness comes from within. Stop looking for happiness defined by a relationship and it will happen. If it does not, you are still happy! I know it is hard but look at the positives when the going gets tough. Hang in there!