Can I lose money playing nash ranges. Losing money being defined by being negative and not defined as making more by playing exploititative?

Yes you lose money by playing nash if your opponents are not playing nash and you fail to realize it

Ah ok. So how do i beat those that are not playing nash? To play purely exploititative?

Actually is really difficult to lose money with "GTO" strategy with such a short stack. Simply you are not going to lose money.
However, there are very often more profitable options. Like limp, 2x raise...

"So how do i beat those that are not playing nash? To play purely exploititative?"

Yes. But when you "lose control", there is always "plan B" (Nash).

"The exploit" with such a short stack is just "to define his frequency". How often he limp, how often he raise, how often he iso raise, how often he shove, how often he use donk bet, how often he fold vs C bet. When you "define" his frequency, you will find better option than Nash. You still can play Nash. In some spots different than Nash. If you see more profitable options vs this guy, vs his frequency. Or possible frequency.

This name "nash ranges" is used for "GTO" ranges for HU play, without ICM. You are talking about DoN. This is something different. I think you must play very tight. You can see that actually, but if you don't have experience...I don't know. You can't use the ranges from the cash games. Many of the hands have expected value of half of the blind or one blind (50/100 or 100/100). On DoN at early stages your chips is 10% more expensive than the chips, which you win. If the average pot for some level and postion is 30bb, you can see the difference. The ugly truth...

So for Don, use tighter ranges preflop in early stages compared to what you would for 6 max tournament or cash with ante? What do you mean by "Many of the hands have expected value of half of the blind or one blind (50/100 or 100/100)"? I do not understand.

Mate, my English is not good, sorry for that, don't be angry, I will try to explain.

Let's say 6 max, UTG (HJ). Cash...Your default range is pretty narrow, yeah!? Let's say close to 10%. Because without info more than that will be -EV. Only for the example, no matter truth or not. 10% range. Let's see the bottom range. You bottom range is AJo, , ATs, T9s and 66. Those hands have pretty low expected value. Half of the blind. This means you will win some pots, you will lose in others, you will call vs 3bet, fold as well, but in a long run (lets say 2000 hands) you will have half of blind profit. 50 blinds for 100 hands. This is a very good profit. But for cash ofc. Let's say 10/20 blinds level in SNG. Let's say for example, if you play this hands , you will play 35 blind average pot. With 4x open raise. You cant call vs 3bet vs solid size (3bet). This is a max loss , 4 blinds (400/100). However in cash you pay rake. Most likely 5% rake. 35/20 = 1.75. You will have this "extra" profit, if you play tournaments (no rake), let's say MTT (no ICM). But for DoN your chips is more expensive (in your stack) than this chips, which you will win. Some of this value will "spread" between the other stacks. You can see this here:

https://www.holdemresources.net/icmcalculator

35 average pot, this means 10% "loss" and minus 3.5 blinds. Plus 1.75 blinds (because the rake) and you have 1.75 loss because you play DoN with hands , which are good for cash. 1.75 minus 0.50 (profit from cash) and "the last result" is minus 1.25 in a long run.

From this hands (AJo, ATs, 66, T9s), only ATs is good enough , because this hand have "nut" potential. You can open with this. But without info for the players (as default) you must fold AJo, 66 and T9s on the lower level. I know this look ugly, but this format is "ugly", "cruel".

However you can use some hands for limp, if your think the field is not so aggro (low levels). And you can still open with this hands , if your think the field will fold preflop more enough (high levels). But let's say for Party $5 DoN, no info for the players or aggro players, you must fold as default this hands and play very narrow range. As long as you don't have enough info (more profit with any hand with good info).

With ante you can use more wide ranges. In cash you also will use wide range. Because you have better pot odds. But not very wide.

I can give you this advice, you can make your own ranges. You know, mate, I am not a coach. I just can give an advice.

Thank you for this. What is your party username ?