What is Reddit's opinion of Altelix 900 MHz 3dBi Gain LoRa Omni Antenna N-Male Connector?

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I got this a 3dbi antenna and now I'm thinking it's not powerful enough however I still didn't get my RAK so I don't know for sure. I thought it's enough being that I plan to set it up in a highly populated city on the east coast.

https://www.amazon.com/dp/B085S78HBW/ref=cm_sw_r_cp_apa_fabc_lEK8FbV3DY96X?_encoding=UTF8&psc=1

this antenna https://www.amazon.com/dp/B085S78HBW?ref=ppx_pop_mob_ap_share on this mount/cable https://www.l-com.com/wireless-antenna-black-domed-magnetic-mount-rp-sma-plug-connector

You'll also want a low loss LMR-400 50 Ohm Coaxial Cable. The longer the cable, the more loss you'll get in connectivity. Also, don't go over 3 dBi on the Omni-directional antenna as your RF propagation will become too narrow. 3 dBi is a nice balance between distance and coverage for this application. If you make one mistake on the cable, adapter(s), antenna, or location, it will be completely ineffective. I suggest taking some time to research 900 mHz frequencies before going through with the modification. Also, steer clear of nearby metal objects and place away from trees if possible.

Here are the components of my future setup (haven't received them all yet, so it's not hooked up. Just posting for informational purposes).

Cord:

https://www.ebay.com/itm/US-MADE-LMR-400-N-Male-to-N-Male-Cb-Ham-Radio-50-ohm-COAX-CABLE-Antenna-20-ft/112552189629?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649

Antenna:

https://www.amazon.com/gp/product/B085S78HBW/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1

Adapter:

https://www.ebay.com/itm/N-female-to-RP-SMA-jack-male-RF-adapter-Fast-Shipping-US-Seller/121389670493?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649

You'll also want a low loss LMR-400 50 Ohm Coaxial Cable. The longer the cable, the more loss you'll get in connectivity. Also, don't go over 3 dBi on the Omni-directional antenna as your RF propagation will become too narrow. 3 dBi is a nice balance between distance and coverage for this application. If you make one mistake on the cable, adapter(s), antenna, or location, it will be completely ineffective. I suggest taking some time to research 900 mHz frequencies before going through with the modification.

Here are the components of my setup (haven't received them all yet, so it's not hooked up. Just posting for informational purposes).

Cord:

https://www.ebay.com/itm/US-MADE-LMR-400-N-Male-to-N-Male-Cb-Ham-Radio-50-ohm-COAX-CABLE-Antenna-20-ft/112552189629?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649

Antenna:

https://www.amazon.com/gp/product/B085S78HBW/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1

Adapter:

https://www.ebay.com/itm/N-female-to-RP-SMA-jack-male-RF-adapter-Fast-Shipping-US-Seller/121389670493?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649