"on my team"
No. Because the way you think about ops is objectively silly. If you think you are going to build 12 ops, and then you can forget about ever building another op again, you are fundimentially not understanding this game, and you should be forced to play with low tier ops until you do.
You shouldn't ask if an op is good or not, you should be asking how to use ops if you do not know, and you should decide for yourself what priority to have in building them instead of outsourcing all your opinions to the internet.
Otherwise, you are just going to copy Kyo guides, and in that case, just build the ops he uses.
Mon3tr is good if you are good at the game, but most people who have her hardly use her, or never use her. new players in general are going to get an upgrade from ANY 6* and should build them, but the order and your priorities for who to put resources in first may very, but this isn't genshin impact.

체력 4700 방어력 329 마저201 인 챔피언👤이 저지불가🚫, 쉴드🛡, 벽🧱 넘기는 거 있고요. 에어본🌪 있고, 심지어 쿨타임은 1️⃣초밖에 안되고 마나🧙‍♂️는 1️⃣5️⃣ 들고 w는 심지어 변신💫하면 쿨 초기화에다가 패시브는 고정피해🗡가 들어가며 그 다음에 방마저🥋 올리면📈 올릴수록📈 스킬 가속⏰이 생기고! q에 스킬가속⏰이 생기고 스킬 속도🚀가 빨라지고📈 그 다음에 공격력🗡 계수가 있어가지고 W가 그 이익-으아아아악😱😱

So as a joke my friend came to my house dressed up as... Pekora? Wait. What, who the ♥♥♥♥ is this? no this is weird, I don't remember pekora being pink, what the ♥♥♥♥ is this, he's saying ♥♥♥♥ like "pipipipi" and "I'm gonna ♥♥♥♥♥♥♥ shoot up a walmart" it doesn't make any sense. He told me he's supposed to be "Pipkin Pippa" who ever the ♥♥♥♥ is that supposed to be, I just want my pekora. And now he's here dressed up as some Pekora wannabe. He took of some of his clothes showing me his flat erotic stomach, his smooth skin and he puts his soft palms against my chest and knelt down, back arched and everything between my legs before unzipping my pants, but...I pushed him off, and told him to get out of my house because if he's going to suck me off he better be dressed up in Pekora wig and clothes not some ♥♥♥♥♥♥♥ bootleg, walmart version of her.

I will NOT pretend that he's Pekora.

TITE

TITENG MALUPIT