Download the launcher
One click to play — the launcher signs you in with Microsoft, downloads the game & Java for you, and drops you straight onto play.minecraftera.com. Prefer vanilla? You can always join by address.
First launch may warn "unknown developer" (builds aren't code-signed yet) — that's expected; allow it in your OS security settings. Or just connect any Minecraft client to play.minecraftera.com (Bedrock port 19132).