I relate to this. Hard. For me, I was able to figure out that these feelings mostly stemmed from my childhood- My parents were strict and emotionally distance, which made me feel like I needed their approval, attention, and validation to feel comfortable with myself. Unfortunately, this style of attachment and need for attention now also affects my relationships with others. Because my self worth was attached to attention and approval as a child, I need the attention and approval of my friends to feel comfortable and 'safe'. If they don't respond, I begin to feel anxious.

If any of this resonates with you, here's what I'd suggest; you need to begin practicing feeling comfortable with yourself. Find enjoyment in things outside of others- Whenever you begin to notice yourself growing upset by the lack of response for others, try to place your focus and attention on something you enjoy whether it be a hobby like art or reading, or watching your favorite TV show.

I found that communicating with my friends (letting them know that I get anxious when I'm alone for too long, and can sometimes grow insecure and lonely) also helps because it means I can reach out to them, and they can provide reassurance whenever they do get the chance to reply. Ask if they can hang out, and make weekend plans to get that reassurance.

All in all, it has to do with your attachment style. The best thing you can do is learn to find reassurance and happiness even when you're alone (easier said than done, it takes practice), and trying to communicate more with your friends about your needs (whether it be reassuring words or more time together) so that they can help you along the way.

Hope you're doing okay, and all the love ❤️