Will installing a second antenna to amplify the receiving signal help ?

There is a problem with low signal reception. The MC7304 module is used. Tell me, please, will installing a second antenna help solve the problem?

I think so, you can give a try on that and see if it improve the performance
You can see in AT!GSTATUS and see if the signal is better

I just wanted to understand in advance whether it makes sense to buy an additional antenna. We don’t have it yet.