In regards to marriage and having a befitting suitor proposing to you, this is something that will hopefully happen in the right time and by the right person. All you need to do is keep with your dua, positivity, patience and good principles and standards.
We have so many ahadith that condemn people who go after looks in marriage, or wealth. You do not want a shallow person who's understanding of life is just outer appearance of people. If you have high akhlaq and you are a person of values and you are religious, then they are missing out, not you.
As for your family members, I am sure they are not serious with these comments, and you should not take things to heart. Do not let sarcasm or negative comments affect you or get under your skin. Brush them off, and smile or laugh back. The less you react to their comments, the less they will say these kind of things that could hurt you.
Try speaking to somebody you trust, who could also have a serious conversation with your family about these comments.
In shaa Allah my fellow colleagues will also have some advice for you as well.
With prayers for your success.