Side note: If it wasn't a down round, measured from your entry event, your shares gross value still went up.
In general: If the company needs 100k in cash, and all shareholders add cash relative to their share in the company, there is no dilution, cash is added, all is good. If some or all of the current shareholders can't add cash relative to their shares, you need an external investor, that investor has to "get shares from somewhere". If the investor would buy them from the current shareholders directly, there would be no new money in the company, the money would go to the shareholders, that is not what we want here. So new shares are created and only shareholders that do not do a pro rata investment dilute their shares relative to their current share, and maybe a partial pro rata investment, to make up for these new shares, which is fair. Without a down round, valued individually for each entry event of the current shareholders, nobody loses any money here.
I do not understand why you are upset. Am I missing smth?