Firstly one should know that Allah The Exalted has promised sustenance for those who marry:
"If they be poor, Allah will enrich them of His bounty. Allah is of ample means, Aware." Quran - 24:32
This doesn't however mean that one shouldn't make an effort to seek a halal income for themselves. Realistically in a capitalistic society, one should seek an income in order for them to maintain themselves and their family. Having an income is a means to achieve marriage but it doesn't mean that these things won't come after marriage. There are many who I know that were students with nothing yet, rizq came to them from places they could never imagine after marriage.
Alternatively one can get to know a future spouse in a halal way or even have a halal engagement (doing a type of marriage contract to make each other mahram) before moving in with each other. This way, one can prepare the necessary things before living together and prepare for marriage.
Having someone is also better for one's mental state because even if one didn't live with their spouse straight away, just knowing they have someone will make them less likely to sin as compared to someone who is single and worried about how to find a spouse.
Regarding parents, one may respectfully acknowledge their advice but it isn't obligatory to follow this advice if it wouldn't be in the best benefit of a believer. A person knows whether marriage would be obligatory upon them and whether it would help their spiritual and physiological state. Parents cannot always determine this.
May Allah give you success