Career entry & salary adjustment after 6 months to 1 year?

hey

After being unemployed for a long time, I found a new job as a production assistant in a temporary employment agency a few weeks ago

The work itself is good and fun and could be a good opportunity for a career starter to gain experience

Unfortunately, I only earn 2030 euros gross with 13.50 per hour pay group 1

which is significantly more than the minimum wage, but the basic wage is only 2030 euros gross according to the contract.

Now I plan to ask for more basic wages after 6 months when I have completed the probationary period and wanted to know if that is too early and creates a bad image or if it could even lead to termination if you give the impression of not being satisfied

because many say you should ask after 1 year at the earliest, if not even after 1.5 or 2 years and then it is not certain whether you will get more basic wage and how much more can only be from 2030 to 2100 euros gross because the temporary employment agency says

they already get good money

or we can no longer pay.

I was thinking about

approximately 2350 or 2400 euros gross basic salary, which means that you might get a net income of 1650 to 1700 euros with tax class 1 or would that be too high

because people often say 2 or 3 percent more each year, which would only be 60 euros gross more

That means I would have to work for years to get from 2030 to around 2400 gross, maybe 4 or 5 years if you calculate that, which would be really long

My question is also whether 6 months of experience as a semi-skilled laborer is enough to negotiate more wages after passing the probationary period and what you think an adjustment from 2030 to around 2350 euros

is that too high

Should we maybe go from 2030 to 2150 euros??