I wouldn't overly police yourself on what jokes you're allowed and not allowed to make. I'm sure if you asked 100 different Arabs/Muslims, many would say they love it and please continue, many would say they don't care particularly, and a small number would very vocally chastise you for it. At risk of sounding like a conservative Youtube demagogue, certain types of people these days are hypersensitive to things that simply do not matter. You're not using them racistly, so who cares? I for one am happy to see Arab/Muslim culture being used in a way that makes it cool and normalizes it. Culture is meant to be shared. The only thing that matters is if you support or hurt the cultures in question, and I sincerely doubt you support the Western destruction of the Middle East. If you saw one Black influencer on TikTok saying "white people should NEVER listen to hip hop music EVER," would you let them speak for their entire race? Should white people stop eating at Mexican or Indian restaurants? No, this is ridiculous, again, culture is meant to be shared and celebrated, it is humanizing and one of the joys of human cooperation and coexistence, its only when the plastic classes of white people steal and then spit on the people they steal from that it has become an issue. You as an individual are not one of those people.
And I certainly don't speak for all Arabs/Muslims either, nobody does. I'm sure someone somewhere will wrinkle their nose. But, IMO, you're not being malicious, you're not. Who cares? Don't let capitalism twist progressivism and globalism into corporate Wokeism where the natural conclusions of its logic are us asking things like, "is it emotional abuse to tell a Black person I like their haircut," or, "is it cultural appropriation to learn Chinese"--it was designed to take a good thing, the human desire of us to learn about and love the myriad of cultures around us, and twist it into immobilizing hesitance, fear, and division. DON'T LET IT. POST BIG MASHALLAH EMOJI.
Not to, like, whitesplain or anything but afaik terms like inshallah and mashallah and alhamdulillah aren't exclusive to Islam either; they're just common phrases that are religious in origin but they are widely used by Arabs who are also Christian or Druze or Baha'i (and probably even atheists too) so it's not as if a muslim person can claim it as being exclusively theirs and prohibit non-muslims from using it, not that any but the most unhinged person would even think to do that in the first place.
I'm gonna take a wild guess here and say that for most Arabic-speakers, any concern over using these phrases (as long as it isn't done derisively) would probably be equivalent to a native Arabic-speaker asking us "Is it cultural appropriation if I say the phrase 'Bless you' after someone sneezes or the phrase 'Thank God' when I have avoided misfortune but I'm not a Christian?"
I worked with Turkish Muslims and Gujrati Muslims and both groups thought it was fuckin hilarious when they heard inshallah/mashallah and encouraged it. They also regularly encouraged participating in ramadan/eid to whatever extent was comfortable. It was quite nice.
Year one we had a Muslim user who made an effort post about how she didn't like seeing non-muslim users appropriate those emoji/sayings. Others disagreed. The discussion was weird. Their usage died down for a while.
It wasn't ever a strugglesession but it was just something that was... about?
Biden making saying "Inshallah" uncool when he said it during the 2020 election debates has the same energy as Mr. Krabs making the word "Coral" uncool.