I can’t find the name of this show / movie - animated

I cant find it anywhere, it’s about a kid that discovers an underground world after his dad leaves him some kind of note I believe. He finds his dads old house, an old car / bike type thing I think, and there is some sort of competition that happens down there

when did you see it, or how old is it? is it 2d or 3d animation style? was it in english? can you remember what any characters looked like/named?

Felix and the Hidden Treasure (2021)?, though it’s quite recent.

thru the moebius strip?

Is it Howard Lovecraft & the Frozen Kingdom?