Relationship anxiety

Hi ladies, I really need to vent and I don’t have any friends so I decided to come here. I have been dating this guy for a couple of months now and I’m feeling really uncertain about him. Our relationship so far has been really really amazing. He’s perfect. And sometimes I feel like he’s too perfect. He keeps to himself and doesn’t really share personal things. He’s secretive. And I told him that I wanted to know some things about him that had meaning and he said it was hard because he doesn’t want to scare me away. 😰😣 he also didn’t post anything about me on Snapchat and I would post something of him, each time I was with him. I told him and he said sorry and he posted a picture of us with this emoji: 🤙🏼..I don’t have him on Instagram because he doesn’t add me. And I just found his Instagram and it’s on private but I can see this girl that’s my friend follows him...not a big deal right?...but I had shown him a picture of her a while ago saying she was my friend and I asked him more than once if he knew her and he said no..😐 i have really bad self esteem because of a previous relationship and I don’t want to add him on Instagram because I’m going to see all the girls he follows and I just dont want to be like this! But I don’t know what to do! And I’m sure as heck he hasn’t posted anything of me on Instagram. I say this because social media is a part of our lives and I hate myself for being so jealous and angry. And when we would go out I’d always have my phone showing him stuff and pictures and he doesn’t take his phone out only when I leave to go to the bathroom or something. I mentioned this to him and he said he finds it rude to have phone out when he’s with me. Right now he’s been in Mexico for almost a month, he comes home in a week. He told me he doesn’t have signal and I get it because it’s pretty bad signal. But he will post something on Snapchat without sending me a message after not talking for days. Or sometimes I’d message him just a random hey babe miss you and he’d respond right away meaning he’s had signal but didn’t text me. I don’t know what to do. I don’t know what to say to him. I don’t want to be crazy about the social media stuff but this stuff just really gets to me and I constantly think about it. 😭😰💔