Do I need to take a chain link off?

2 things, 1 the rear wheel wasn’t tight enough and moved forward (happened to me before) or 2 the chain got “loosened” up since the bike was new. I might (could very well be) wrong but that’s what’s happened to me before

we need to see your rear axles depth on the chainstay in order to answer that question

you might need to remove a link, or you might also just need to torque down the rear axle so it doesnt slip on a landing or something

wont know until we see