The more recent tourneys have been streamed on Youtube too if you don't like the Twitch experience as otherwise suggested. If you search for the tournament organiser, then you should find videos on their channel. E.g. the latest Dreamleague is all on ESL's channel in full under the live tab here: https://youtube.com/@esldota2
Dota 2
Thank you so much for the link!
I'd try twitch replays if there's nothing on youtube, valves own for TI/Majors whatnot or of production companies that hosted specific events, perhaps some streamers as well.
I'd also expect people like Purge to have decent content in the decision making commentary (not sure how recent?) and maayyybe Day9 from before he got discouraged to stay in Dota, though I think again most help he had in decision making info may have come from Purge.
I'll look them up, thank you!
I remember JoinDota was the place to be for that way back. Shame it's not around anymore.
If you're only looking for old Internationals, the replays are all still archived on the official twitch channel. I was rewatching some of Wings' run through TI6 recently (which was probably the best TI of all time).