It can vary depending on what’s causing your low back pain. In general for many it’s due to week abs & tight lower backs & poor posture.
Work on strengthen both your abs/back (your core muscles) while also stretching your back & probably glute & hamstrings are tight too.
Start standing straighter & use your muscles (not joints) to hold your body upright. We tend to allow our joints/bones to do the work & not our muscles which is what they are ment for.
Pilates & yoga are great places to start to learn to work from your core.