The fact is, we never give up on the concept of love and "finding the (right) one." In the genre of "singles looking for love," our tastes only ever evolve in cadence with who we are in each chapter of our lives and the trials we deal with in the times that we have allowed ourselves to be vulnerable.
Just so we're level, I have explored dating in many aspects but hold true to the much more intimate, classical approach and blend it with the pace and expectation of what modern dating actually is right now. When it comes to the topic of online dating/app dating, we are essentially shopping for the "right fit" in our men based on the way we "market ourselves" through the various profiles we will eventually play with in this time of our lives.
Finding someone "unattractive" because of how we (as an individual) perceives their beauty, is honest and nothing to be ashamed of. (But of course, if you're writing someone off because of their big nose or average body -- then yes, that shallow.) At some point in time we will be on the top of the "attractive" food chain, and at some point in time we will be on the bottom of it. We all get rejected and we all eventually reject someone else the same. It's being honest to your tastes and what will extend the longevity of your romances, not to mention heightening the connection. We just all hope to God it's mutual lol.
When it comes to the ultimate end goal of your query, the real question you have to begin asking is, how much of yourself and your standards are you compromising just for your ideal "physically beautiful" type of guy? We have all done it at least once at this point in our twenties, and have overlooked what it was about them that -- beyond clothes, status, etc. -- really captured us in the first place. If it all seems to be ending the same way as consistently, dive into the pool of men you have seen/dated, and challenge yourself in their ultimate worth to you and your happiness (as well as the extent of time it took for everything between the two of you to dissipate). Not in who they are now, but who (or what) they have the potential to become in the future. Does it agree with you? If not, is it someone that's worth putting as much energy into in this way? Spending money on outfits and nice dinners is cute, but it's key to begin to equate the potential failure of our endeavors to the cost of valuable time and energy being compromised in pursuit of someone/something as inconsequential.
Dating, with a constant hope for love is much more detrimental than most people realize. Your heightened states of emotions will tend to seek after every facet about someone that you can connect with to be your "ideal," and tends to skew the real image of the man that is sitting across the table. More often than not, we place a lot of our failures in people who have hurt us, instead of taking responsibility for allowing ourselves to let them be as much of a part of our lives to begin with.
It's important to remember that love does not wait for anyone. Instead, it stumbles upon our lives and begs to be nurtured. You're either ready for it, or you're not. Again, we can only ever hope to God that it's mutual.