Hazure Skill “Chizuka (Mapping)” o Tenishita Shounen wa Saikyou Party to Dungeon ni Idomu (2019)

Blurb:
Note Athlon was really looking forward to becoming an adventurer with his best friend (and crush) Miya. That is, until he drew Mapping – a rare skill with practically no purpose. In other words, it’s trash. This kicks off a vicious spiral for Note, who plummets further and further into the depths of self-loathing despair when Miya leaves him. He now spends his days drinking away his earnings, wondering how things might have been different if only he’d pulled a better skill … But little does he know his trash-tier skill is about to score him an invite to a top-tier adventuring party! Note’s now determined to find his way through life – and a dungeon! – in order to make something of himself.

Source: www.anisearch.com/manga/53616