Good advice above. Two packets of Saflager 34/70 would do the trick for most lagers on a 5 gallon scale. I recommend using RO water if you plan to brew a light lager and add a little calcium chloride to the mash water. It’ll make a big difference, trust me. Unless you have nice soft tap water. Sulfate can make noble hops taste harsh.
But, I’d recommend brewing a red or amber lager first. And it’s true as stated above, if you aren’t patient with your ales, you’re really going to be hurting brewing lagers. If anything, brewing lagers (at least 50% of what I brew now) has made me more patient as a brewer in general. Most beers taste better with a little conditioning time. I fell into a habit of wanting to drink all my beers at 3 weeks from brew day and was often disappointed with what I was brewing. No more. I try to give my beers 4 to 6 weeks now, a bit longer for lagers.
Oh, and if you’re going to brew German lager, use authentic ingredients! Just like in cooking, if you use US pilsner malt and expect a nice Munich helles. You’ll be sorely disappointed.