Do you change your personality to please others? Why are you exhausted being someone else and being loved for who you are not? You will be left with a feeling of emptiness inside. It's easy to understand why. Allow yourself the right to be yourself, to listen to your emotions and needs. Be who you are.
The relationship will be stronger, will last in time because the person will love you, you, and not the character that you exhaust yourself to be. Sooner or later, you will be unable to embody it and this will break the trust and the relationship. Playing the honesty card always wins when you want to build a long-term relationship. You have to be authentic if you want something to exist. To build a lasting, real relationship, you'd better be yourself, right from the start.
Let's look at an example. When I introduce myself to someone on this dating application, I have to present myself as I am, not as I would like to be, or even worse, as I think the other person would like me to be. It's always a question of perception. If I tell him that I'm very early, that I'm extremely tidy when I'm not, because that's what it says in his comments that he's looking for as a person, when it's completely false, it's not like me at all, that relationship is going to fail from the start.
So be loved for who you are.