It's not my official job, even although I haven't decided what job I want to work in the future.

Even though is usually used for contradictory statements like, “I don’t really like fish even though I like tuna.” In this statement we use even though because tuna is a fish so if you don’t like fish you generally wouldn’t like tuna.

Neither it's as it glamorous work. / it’s not glamorous work.

Work is a general noun so you don’t need to use “a”. The second sentence works slightly better as neither is usual connected to another statement

Since the products are mostlysomewhat fragile, we have to carefully pack them in cardboard boxes and wrap them using lots of papers that are similar to newspapers.

I think mostly while not necessarily wrong sounds unnatural. I also added them behind wrap to help the sentence flow better.

If the product breaks during the shipping, our account rank decreases sand so do the sales too.

You would use breaks because product is singular(product can refer to multiple things however). “So do the ____” means the same thing as too.

I'm thankful for helping my father out with his business, but I have to decide what I’m going to do with my life.

I feel latebehind in life byecause of choice paralysis and somehow I can't get past it.

I’m not sure what you meant but this is how I interpreted it.

It's not my official job, even though I haven't decided what I want to work as in the future.

"What I want to work AS" , adding these words makes the subject more clearer. Subject here would be the job you want in the future.

Neither it'ss it a glamorous work.

If the product breaks during the shipping, our account rank decreases soand the sales do too.

"Breaks" will be plural.

I'm thankful for helping my father out with his business, but I have to decide what I am going to do with my life. as well.

It's not my official job, even though I haven't decided what I want to workdo in the future.

Neither it's aor is it glamorous work.

Since the products are mostly fragile, we have to carefully pack them in cardboard boxes and wrap using lots of papers that are similar to newspapers.

If the product breaks during the shipping, our account rank decreases so theand sales too.

I'm thankful for helping my father out with his business, but I have to decide what I am going to do with my life.

I feel paralysis late in life by choice paralysis and somehow I can't get past it.