Buget MTB upgrade

I am looking to upgrade my Apollo Paradox MTB.

This is a buget bike so I don't want to but much money into it as even with upgrades it's always going to be a cheap bike.

I've already put trigger shifters on it and now im currently looking at upgrading the suspension.

I'm currently looking at:

RockShox Judy Silver TK Solo Air Fork

https://www.bike-components.de/en/RockShox/Judy-Silver-TK-Solo-Air-29-Suspension-Fork-p76282/?o=1000273697-gloss-black-5-mm-Quick-Release-100-mm-51-mm-1-1-8-29-100-mm&delivery\_country=GB&channeltype=pmax&utm\_source=chatgpt.com

And

Oniissy 190mm Air Shock

https://amzn.eu/d/08jGcacq

I'm open to getting second hand parts.

Could someone please offer advice thanks