Lebels were still in use with French reserve troops and colonial troops in Africa, Indochina, and Madagascar at the outbreak of WW2. They also saw later use with the French Resistance and Vichy French troops. As Dean said, while these were primarily the M93 rifles (which had a slightly different bolt) and the modified M93R35 carbines, it's plausible that some of the original model ones were still around. Though if I had to guess, I'd say that the 1886 Lebel that you found is already the M93 version, which was the most common.
Lebels that fell into German hands after the fall of France also made some appearances in the hands of last-ditch Volkssturm units in late 1944 and 1945.
However, unless you're dead-set on a French rifle, I think you'd be better suited by going with a more common rifle, like a M1903a3 Springfield, K98 Mauser, or Mosin-Nagant (especially one of the more accurate Finnish M39s), as ammo would be significantly easier and cheaper to find.
