If you're in southern california, Fr Sretenovic is where to go. He operates in two counties and his website is actualcatholic.com
Never the impression that you are not wanted because you are mixed race. God loves all people, And Christ died for all; that they also who live, may not now live to themselves, but unto him who died for them, and rose again -2 Cor. 5:15.
If you think there is any hostility in Catholicism, it is directed at the act of miscegenation. For it is discouraged because it is not prudent for many reasons. You should feel no fault for being the product of it.