Whatsapp voice messages recorded quietly?

I have a Huawei p30 lite (before that the Mate 20 lite) and with both cell phones I have the problem that my audios are recorded and sent really quietly every now and then. Others sometimes don't. On Instagram, on the phone or whatever, everything is always recorded normally, but not with WhatsApp. Why is that? 😕

I also have a huawei p30 lite and a voice message is normal for me