Mommy friend etiquette?

So I been trying to make mommy friends. New beast. Have a 5 month old daughter. We are a military family and stationed 3,000 miles from our family. We have no one here. I’m getting a lot of competition, controlling and aggressive vibes from two of my mommy friends of 4 months. Friendship started great but slowly turning to a point of I don’t want to hang out with them anymore. How do you avoid this? I really want a good friend mommy or not mommy, but I feel like the only one who will understand my crazy life of naps and spit up is another mom. But the two moms I’ve been hanging with have slowly turned into crazy ladies.

One got angry I didn’t tell her about my baby starting solids (she believes to wait till 6 months which is fine but my doctor gave me the go ahead and I introduced them 4 months 3 weeks) she found out through my husband telling her husband and she got aggressive and weird and I actually left her house early because her behavior was borderline erratic. Like she was angry? And I didn’t tell her cause I did not want judgement. The other constantly argues with me if I tell her how I do things of why her way is better and how I should switch. I’ve gotten to a point where I don’t talk about my daughter at all and try to just talk about hobbies and us. Well no one has anything in common or if we do they cut off and just want to focus on THEIR child. and people look at me weird then talk more about their child. Which is great and I love to hear but I can’t really give back because it’s constant one upping and judgement. I stopped telling people my parenting or about my daughter which makes me sad I can’t share.

I really want a close friend to help me get through this duty station. Should I not be looking at mommy friends per say? What is etiquette at play groups to avoid all the mean girl BS? I’m just a chill fun mom looking for other chill fun moms that can have the mother aspect in common but also be friends even if we didn’t have children. Feel like they just want the friendship to compare the children and have “mommy friends”. Is this normal? Also any tips for groups to network for moms or where I can at least take my child would be really helpful.