Hello everyone glad To be here and I hope that everything is having a great 2026 so far

I have a issue and hope that someone could shade so light on in and help me understand the problem and if it is something that I fix myself or need to take it to the dealership
I got this LR and it’s has being great so far , few days a go I went to start it and a light pops on dash saying key fob no found
I google it and someone literately saved my life by showing how to stay the vehicle by placing the key fob under the steering column thing
Now the car doors won’t lock and 6 out of 10 times when I start the car it won’t start normally by pressing the start bottom

any suggestion on what to here would be very appreciated please