Entrer en contact and améliorer¹ nos réseaux are fine and might be used by native people.

As a side comment, while your text is quite good French, there are a few issues like these ones :

• en apprendre et en proposer plus doesn’t seem to match “learn new things” and the two en are odd here.

• au notre mode de vie is incorrect, should be à notre…

• parce que nous devons doesn’t translate “in order to”.

• notre needs to agree with journées

• we do not use German quotes „xxx“ but guillemets « xxx » ².

¹ _{Instead of améliorer, renforcer or consolider would better match stronger.}

² _{Azaghal corrected your question in the meantime.}