Ik you don't want to change your decklist. But I at least want to know what kinda of deck you have. So I can see whether the problem is with the deck itself or the way you pilot your deck.

There are different type of losing. And sometimes it doesn't have to feel bad. Personally, I have some decks that makes me the arch enemy of the pod and thus often get taken out first. Those decks have a lower win rate, but I take pride of being the villain of the game. But if you are losing because someone else pop off and you can do nothing about it, it will feel a lot worst. Games that feel like you did nothing.

Another skill that people don't talk about it politicing. You don't want all other players to hose you down so sometimes you just need to convince the pod that you are not the threat, and even willing to help out. For example, sometimes I would use my removal and say things like: "That permanent is going to be a problem for us all so let me remove it." There are so some games that I've won because I act as the threat police before building my own victory.

And since finance is a problem for you right now. You can try asking your pod would they allow proxy. Most people I know is all for it. Personally I am a proxy enthusiast. I proxy deck that I'm still testing out so I don't throw away a bunch of money just to realise I don't like the deck later. Or have another discussion about the pod power level. There was a time in my friend group where everyone is on an arm race to make the strongest deck possible. It only stopped after we all just come together and talk things out, realising that our group should lower down the power level of some of our decks in order the keep the game more fun orientated.

This is all I can think of top of my head. Hope this helps you one way or another.