C# AES decrypted output is not the same as input

Question

I wanted to do a simple message encrypter to dip my toes into the matter but I can't make it to work. The problem is that whatever input I start with, sometimes it encrypts it but when I try to decrypt it, it just doesn't return the original string. It would be really helpful if you could tell me what I'm doing wrong or guide in the right direction.

Complete code

This are the sections in charge of encrypting and decrypting.

void Decrypt()
{
    using var crypt = Aes.Create();


    string[] input = ClipboardService.GetText()?.Split(SEPARATOR) ?? Array.Empty<string>();
    byte[] key = input[0].ToBytes();
    byte[] IV = input[^1].ToBytes();
    byte[] value = string.Join(string.Empty, input[1..^1]).ToBytes();
    
    crypt.IV = IV;
    crypt.Key = key;
    var decryptedValue = crypt.DecryptCbc(value, IV, PaddingMode.Zeros);
    string decryptedValueInText = decryptedValue.ToUnicodeString();


    ClipboardService.SetText(decryptedValueInText);
    LogInfoMessage($"{decryptedValueInText}: {decryptedValue.Length}");
    crypt.Clear();
}


void Encrypt()
{
    using var crypt = Aes.Create();
    crypt.GenerateKey();


    string value = ClipboardService.GetText() ?? string.Empty;
    var encryptedValue = crypt.EncryptCbc(value.ToBytes(), crypt.IV, PaddingMode.Zeros);
    string encryptedValueInText = $"{crypt.Key.ToUnicodeString()}{SEPARATOR}{encryptedValue.ToUnicodeString()}{SEPARATOR}{crypt.IV.ToUnicodeString()}";


    ClipboardService.SetText(encryptedValueInText);
    LogInfoMessage($"{encryptedValueInText}: {encryptedValue.Length}");
    crypt.Clear();
}

There are two extension methods:

    public static string ToUnicodeString(this byte[] bytes) => Encoding.Unicode.GetString(bytes);
    public static byte[] ToBytes(this string str) => Encoding.Unicode.GetBytes(str);

Example The input links were:

https://www.youtube.com/

https://www.youtube.com/watch?v=bSA91XTzeuA

I don't think it matters because the key and IV are autogenerated everytime anyways but still.