If your clothing actually looks like rags, dust, pillow cases and boogers, then yes, you desperately need some new clothes. If you aren't already practicing basic hygiene, then yeah, you're not going to get very far.
Some men smell awful and still get women. But chances are they dress well. But these men are the exception, not the rule. You need to take care of all aspects of your hygiene. Shower daily or every 2 days. Use deodorant. Figure out whether you're going to shave or grow a beard, you need to choose one. Either don't shave or shave every day. Style and/or comb your hair some way that looks decent. Brush your damn teeth, you only get one set. Don't smoke or do meth, that will ruin your teeth.
You're welcome.