Find one small thing you can cut out and save that money every week in a savings account.
When the market crashes like it did in 2008 and 2020, take every one of those dollars and put it in stocks, because during a crash, you can often get high value stocks at a huge discount that wouldn't exist in normal market conditions.
Wait 2-3 years for the market recovery and sell that stock at a profit.
Also, don't wait until your 30's to get a set of silk sheets.
If you're happy alone, be alone. You don't have to get married. You don't have to get kids. Those things suck to have if you do not want them in the first place.