I started to look for a new job, because my current position hais not got any challangchallenging me.

Of course we know it's YOUR current position you're talking about, but you need to specify this for the sentence to make sense.
"Has not got any CHALLENGES" would have worked but it sounds a bit awkward to my ear

I applied for a few position ons last fFriday, so iI am waiting for the next steps.

You apply FOR new jobs
Few indicates more than one thing, so it's positionS
Days of the week are always capitalized. So it's Friday.
When "i" is on it's own it is always capitalized

I need to more discoverwould like to get more information about these position, i haves that I have applied for. I want to ask a few people about the companyies before iI agree itccept any job.

I found a channell on reddit, where employees usually write theyir persional opinions about the company they work for.

I also have to consider also these opinions, before iI apply it.

Looking Afor a New Job

I've started to look for a new job, because my current position has not got anyisn't challaengeing.

I applied to a few position ons last fFriday, so iI'm waiting for the next steps.

I need to more discoverlearn more about these positions, iso I'll have to ask a few people about the company before iI agree ito any of them.

I found a channell on reddit, where employees usually write theyir persional opinion about the company.

I have to consider also these opinions, also before iI apply ito them.