Hikes from Lauterbrunnen without cablecars/trains

I’m considering staying in lauterbrunnen for 3-4 days this July with my girlfriend. We love hiking and that would be the main purpose of the stay. However after looking into it a little bit it seems like a lot of the recommended hiking trails require expensive trains/cable cars to reach. I’m wondering if there are good hikes that can be reached by foot from the town of lauterbrunnen. We’re relatively experienced hikers so would prefer 2-3 full day hikes that get us up high with good views etc, but I’m worried that all of these type of hikes maybe require spending a lot of money on cable cars and trains. Is it possible to hike in lauterbrunnen without using them, or should we look somewhere else?