Voting for Volt in Germany with 5% limit?

I want to join the party and engage myself in the elections, especially in the European ones (already voted them there last time.)

But in February, I am unsure if I should vote for them. Merz from Union is most likely going to be chancellor and I think I "have" to vote for the Greens to have a stronger impact against conservatives/rights. Volt will very very likely not make the 5% limit to enter the Bundestag.

I know that this is always the problem with smaller parties here, but the dangers that a strong Union and Afd will pose keep me from voting Volt.

What are your thoughts on this?