just look here: curl | OpenRepos.net — Community Repository System
https://openrepos.net/sites/default/files/packages/7598/openssl-libs10-1.0.2o-2.armv7hl.rpm contains libcrypto.so.10 and can be installed independently of openssl1.1.1l packages from jolla SFOS4.3 (even on a Jolla1) which are availabe here, too.