the Valor template was deactivated, and Buddypress became my site template
Probably because when you went through the installation wizard at Step 4, you clicked Save without noticing that the button was checked for BP Default theme https://codex.buddypress.org/user/setting-up-a-new-installation/installation-wizard/#step-4-choose-theme-to-use-for-your-bp-install
Just go to Appearance > Themes to select your WP theme, then install/activate the BP Template Pack plugin, and finally go through Appearance > BP compatibility process.
