Are you able to share how StatsBomb collects event data? I'd love to build something to capture stats for local club teams but probably not if it involves computer vision. Thanks!
We do use a combination of humans and computer vision, and some providers (especially of full tracking data) have wholly automated pipelines, but analysts all over the world are collecting stuff manually every day. Really depends what sort of stuff you want to collect - you can use something like SportsCode to match any sort of events to video segments, and if you're a coach or scout you'll know what performance indicators you think are most important. If you just want some sort of team performance metrics you could start collecting shot data (coordinates, defensive pressure, type of assist etc) and build a simple xG model. Nothing you can't do in a spreadsheet or even on paper.