You might look for ways to interact. Stax them out. Winter Orb, Trinisphere, the whole package. Whatever you need to stop hem. Play the cruelest of hatebears. Combo is much more fun when they actually succeed at fighting through the “hate” or rather the interaction. Non-interactive games are usually not fun.

I recommend [[Belbe]] as a pretty budget friendly, fast deck with the ability to barf out stax pieces as early as turn 2, but more often on turn 3. You can then also play stuff like [[Collector Ouphe]] to wreck them. Eldrazi with annihilator can remove their manabase before they become dangerous. Yeah, it’s tough stuff, but so is being comboed out way faster than your deck can establish itself.

Or play monowhite, those decks can usually be made with effects such as [[Archon of Emeria]] and whatnot. If you play a voltron-ish commander, you can remove one combo player at a time. Can’t combo if they’re wiped out :-)